5 Reasons Why I Hate .40 S&W

It is bigger than most .40 caliber guns, but the 10mm GLOCK 20 is not a compromise.

It is bigger than most .40 caliber guns, but the 10mm GLOCK 20 is not a compromise.

1. It isn’t 10mm.

Let’s start with the harsh reality. The 10mm may be the perfect self defense round. It makes a hell of an impression. The 10mm slugs weigh the same as .40 slugs, but are moving a whole lot faster. Yes they produce nasty recoil. The recoil is punishing. Follow up shots are not as fast as they would be with a lighter load (like a 9mm), but I’m still inclined to say bigger is better. And the 10mm has more than enough stopping power for anything on this continent. Two legged or four legged, a well placed 10mm will dispatch a threat.

The .40 was designed as a compromise. It is bigger than a 9mm, but smaller than a .45 ACP. It feels like a round that was designed by committee. I can see the meeting clearly in my head. No one agrees on what they want. They know it isn’t the 9mm, and they know it can’t be the 10mm. So they take 9mm ballistic performance expectations and then dumb down the 10mm until it meets those expectations. That allows them to do something I consider really dubious, which will be discussed in #2.

2. Most .40 caliber guns are just retrofitted 9mms.

Fundamentally. Some, like the GLOCK 19 and 23 are built on identical platforms. But there is an increase in recoil. Shoot a GLOCK 19 side by side with an identical GLOCK 23 and you’ll see what I mean. The 19 is flat shooting and damn fast. The 23 produces some serious muzzle flip. This isn’t a big deal if you aren’t shooting much, but it can wear you down after a long day of training. I took a 23 to a handgun class a year ago and went back home and immediately traded the 23 for a 19. I’ve put 500 rounds through the 19 in an afternoon with almost no hand fatigue at all.

The 10mm doesn’t hurt as badly as the .40. I think this is because the 10mm guns, like the GLOCK 20 are much more substantial. The weight helps with the recoil. It still produces enough shock to wear on your hand and wrist, but I haven’t had as much of a problem with it.

An example of case rupture. This typically blows the magazine, but can do more serious damage.

An example of case rupture. This typically blows the magazine, but can do more serious damage.

3. The .40 can be dangerous.

Compromise almost always sucks. No one gets what they really want. Because the case has been shortened, there is less room for error. Get on the interwebs and start reading up on .40 S&W failures. If you happen to jam the nose of a bullet into something unexpectedly, like can happen during a miss-feed, you may push the whole bullet into the case. Even a fraction of an inch can result in disaster. It will still chamber, but the pressure builds too quickly. In unsupported chambers, you’ll get massive case ruptures–or catastrophic failures.

4. Limited ammo supply.

The .40 S&W seems to be regarded as a carry round. As such, there are fewer good training rounds available. During the big ammo shortage we went through last year, .40 was the only round on the shelf. Winchester, mostly. That was a big plus in .40’s favor. But I want to be able to pop into a big-box store and pick up 500 rounds of ammo and a gallon of milk. And that gets expensive with .40. The selection of carry ammo is good, better now that SIG is making their own. I’ve been working my way through a case of it and I have no complaints that aren’t purely philosophical–but it would sure be nice if I could get identical training ammo. I know it is possible, but it isn’t likely.

SIG's new .40 S&W ammo may be a good argument in favor of carrying round (but they also make it in .45 ACP and 9mm, and .380, and .357 SIG--so you have options).

SIG’s new .40 S&W ammo may be a good argument in favor of carrying round (but they also make it in .45 ACP and 9mm, and .380, and .357 SIG–so you have options).

5. Limited capacity for limited gains.

My last complaint my be a bit hypocritical, considering I’m such a fan of the 10mm and the .45 ACP. Okay. I’m fickle. I just just can’t help thinking about capacity. Call me old fashioned, but I still think it matters. If I’m going to carry an automatic in bear or moose country, it will be a GLOCK 20. If I’m not in danger of getting mauled by a brown bear, I’m going to carry a 9mm. There is so much selection, and capacity is about as good as it gets.

The 9mm GLOCK 19 I mentioned earlier has a capacity of 15+1. The 23 is 13+1. I know that I’m splitting hairs there, but I’d prefer to have the extra rounds. The 10mm GLOCK 20 and the larger framed GLOCK 22 (.40 S&W) both have 15+1 capacities. Why wouldn’t I want the 10mm? Why would I want to compromise? I’m not ordering a medium shake to go with my medium fries today at lunch. And, if I have a choice, I’m not riding the .40 Short Bus.

As always, I turn to the empirical data. Ballistics by the Inch does amazing work with ammo testing. And they have a nice section for each caliber where they run production model guns and record their findings. Take a look at the two charts below. The .40 bullets are heavier–that’s a benefit. And they’re moving pretty fast. Yet, as physics dictates, the heavier rounds are moving more slowly.

Yet the 9mm is no slouch. I still believe the the bad reputation of the 9mm is due to the dubious performance of 115 grain ball ammo in combat. The increase in capacity, though, and the speed that comes from greater control still make the 9mm, at least for me, the winner.

The real-world results from Ballistics by the Inch for .40 S&W.

The real-world results from Ballistics by the Inch for .40 S&W.

 

And for 9mm.

And for 9mm.

 

 

{ 147 comments… add one }
  • Michael August 5, 2017, 7:59 pm

    I’m surprised I never saw this article before. I think the column was funny but also made some good points. I admit I’m biased though, because I was thoroughly unimpressed with the .40 at the time the FBI adopted it, and disgusted when it was followed by pretty much every LE agency in the US. It lacked the magazine capacity, velocity and quick follow-up shots of the 9×19 while offering overall performance that was anemic at best. I tested velocity, penetration and expansion on virtually every hollow point handgun cartridge I could find a gun designed for back in the 1980s and 1990s, and the .40 wasn’t as good as many, many others at anything. Nothing! Deliberate mediocrity has never excited me much. Well, really not at all. Finally, the .357 Sig appeared and I saw a small ray of sunshine in the gloom, but it never caught on with many PDs or the military, apparently because it made the .40 look like the error it I thought it was, and government only admits errors when they’re lying about something. Having said all that, the improvements in propellants and bullet construction have improved the .40 to the point it functions like a round designed for LE men and women who might any day encounter the most dangerous, vicious, bipedal monsters in the country. Of course, government is now switching handgun rounds, but being government, still ignoring the superior performance of the .357 Sig. They’re taking up the 9x19mm that led to the development of the truly awesome 10mm, which they promptly neutered at the time it was developed, though it was understandable why in some cases at least. Then, they shortened and reintroduced it as the yawn inducing .40 caliber almost good enough round.
    I owned a .40 Glock for awhile years ago. After doing some ballistics tests I bought a .357 Sig barrel insert for it. I sold it later and bought a nice 686 S&W revolver since I already had a K frame .357 mag and I like to own guns in pairs for parts emergencies. Of course I’ve only experienced 1 gun-related parts emergency, and it happened with a nearly 40 year old .22 rifle which had apparently been out of production since the day after I bought mine. I gave up trying to track down the part it needed after about a year and gave it to a friend. He found the part in only about 3 years! Paid near what the gun cost new getting it shipped from some online place, too. Anyway, I still wouldn’t happily choose a .40 caliber.
    I’m doing kind of a reworking of a few guns and hoping to scrape together the funds for a couple of 10mm pistols and also two carbines in that caliber. I want to get a couple of pistols and carbines in .357 Sig as well for the use of the feminine members of my family, so they’ll have some home/self defense guns that are darn close in many ways to the 10mm, but produce a bit less felt recoil. As for the motivations of government, everybody knows we the people will be the last to be told anything true, so I’ll just keep doing what I do best…if I ever figure out what that is. I’ll just have to deal with my resentment over the fact that government, funded partly by me, can afford to buy the best, but prefers to pay top dollar for stuff that’s almost as good as the used wares one might find at bottom-end thrift stores in neighborhoods most sensible people avoid.

  • Bob July 19, 2017, 2:47 pm

    This article should be titled:

    5 reasons why I hate 40 because I love 10mm.

    I’ve never understood why people get so emotionally wrapped up in a caliber.

    • Rodger Smith October 28, 2017, 6:18 pm

      No it should be titled 5 reasons why my pussy hurts

      • john November 13, 2017, 4:11 pm

        I love the 10mm and have owned the G-20 over 10 times. It’s a love hate relationship. I currently own the Gen 4 G-20 in FDE.(BIG DEAL) lol. And I own the Sig-Sauer P-220 10MM elite. Gorgeous gun. anyway I also own the Smith 40C and it’s full size relative. it’s a no brainer that the 10mm is more powerful. but the 40 is no slouch and is just a powder deficient 10mm lol. but it will drop you as dead as any 45 ACP-357 SIG. etc. I could give you numerous reasons why the 45 is becoming a relic and it’s not quite the one shot stopper all the old timers think it is.sure it will put a nice sized hole in you with target ammo or JHP ammo. but that doesn’t make it the gun of all guns. I love your response. WHY MY PUSSY HURTS HAHA.I was thinking the same thing. I carry my smith M&P 40C daily with 165gr Corbon JHP ammo. Getting 1,275fps out of that 3 1/2″ barrel. that’s up there in the low 500 ft. lbs. of energy. That’s no slouch. yes my 10mm with 155gr jhp from underwood is getting close to 800ft lbs. who cares? will a bad guy being hit with 525ft lbs. of energy really now the difference in 275 ft. lbs.? I doubt it.and the 45 has to drop down to 165gr+p to start getting the higher velocities. It’s always been the 230gr jhp at about 975-1000 fps with about 340-380 ft. lbs. I also don’t get why people get so wrapped up in a caliber. Who gives a Shhhhhht? it’s all about what you shoot accurately and shot placement. Just about anybody can pick apart a round. I own a M&P 45 ACP. but I am not a big fan of the round. I like the 10mm obviously but it’s not the king of the hill either.damn good high capacity round in the G-20. but the 40 is identical in almost every way. I said almost identical. I could give you 5 reasons why I hate the 45 ACP or 1911 style guns. but why bother as it’s just my opinion and I don’t want to raise the BP of the Geritol crowd most notorious for their love of the 45 acp and it’s tremendous knock a person 5ft backwards with one shot lol and have their entrails all over the place (sarcasm) the 45 is designed to stay inside and make a mess. but just like the big fish story’s the same goes with the 45.I still carry my full size 45 in a shoulder rig in the winter for local around town business. The 10mm is loaded too hot for that. so to sum up my long rant lol…who really gives a damn what you like or don’t like about a particular round. Don’t like it? don’t shoot it. shoot what you like and I will do the same. whether you like the 40 or not? it’s still a damn good defense round and will kill you dead as quick as any other round. The 9mm will drop you dead. 5 reasons why your pussy hurts? I love it…

  • James Nathan Parker June 10, 2017, 1:29 am

    I trust my life everyday with the .40 I use the glock 23 gen 4 loaded with 180 grain PDX1

  • don April 25, 2017, 1:38 pm

    To each his own. I own a 10, a 40, and 9mm. I have no problems with any of them.

    • Mark June 22, 2017, 9:19 am

      I’m .40 cal guy too whys everybody so negative on a .40 cal you can put somebody down with a .22 cal

      • john November 13, 2017, 5:25 pm

        honestly, who cares about the individuals who don’t like the 40. it most certainly can and has put many an individual in the ground for a dirt nap. probably the die hard 45 ACP guys who are threatened by the 40 haha as it put’s up numbers better than that old relic. I mean how dare their be a round that can outshine the old timers 45 lol. if you like the 10mm and don’t like the 40 then you’re a hypocrite. it’s the same damn bullet. only difference is a shorter case and not as much powder behind it.it’s the same projectile that comes out of the venomous end. Just like a 357 sig is a 40 necked down with a 9mm projectile. it mat be a one trick pony. But it’s a damn good trick and very lethal. again, why do people get so wrapped up in calibers? zipper heads just shoot what you shoot well and worry less about what others are shooting.

  • Russ April 9, 2017, 7:15 am

    You’re all wrong. Period. All this arguing about 9mm vs 40 cal vs 10 mm. Bunk! Man up…Get a real gun that will get the job done the first time. Get a S&W 629-3 (no Clinton gun lock and no transfer bar….just the real deal solid steel firing pin) 44 magnum 6 shot revolver loaded with 240 grain PMC Starfires. I like the 2′ barrel for easy concealed carry. Double taps? Who needs it? A hip hit leaves the leg dangling by a thread with massive blood loss. Not concealable you say? The hot tip is a custom Galco IWB and an extra big pair of Dingo jeans. I have taken to loading my shorts up with a sock full of the Socialist Republic of California’s mandated steel bird shot to balance the load. The bonus is, if you find yourself in San Fran when the balloon goes up, you can pull that sock out and, while the perp is distracted by the bulge that is coming his way, you can beat him to death with it. Guaranteed one sock shot.

    • Scott June 24, 2017, 12:41 pm

      Great Humor!

  • Glen January 17, 2017, 10:10 am

    Let me start off by saying this.. One technology doesn’t evolve without the other.. The argument that +p ammo and ballistic advancements through better ammo sense the 80s is dumb… Because not only has the 9mm evolved so has the 40… Especially with hordandy critical duty.. research that round..That being said there is nothing wrong with both… a .380 has stopped on one tap before.. It really depends more on shot placement and how comfortable you are with that caliber.. .40S&W is better for me in certain situations the 9mm has just become more equivalent than before.. And has lighter recoil.. I am sure if you where training with your service weapon day in and day out… your going to want a 9mm.. Glock 40’s aren’t the snappiest things in the world but there is a noticeable difference in that platform between the two for sure.. Sig Makes the best .40 pistol I think..But my back up is a Glock 27 gen 3.. I prefer .40 but I shoot better with slight recoil.. Some people do just like some people don’t..

  • Robert Murray January 10, 2017, 6:06 pm

    I have the subcompact .40. G27 gen3. It doesn’t snap like I keep hearing about. Nor do I miss inside of 15 yards with it. I love it to death but I know the next gun I buy won’t be glock. They’re too much cost for what they are. I’ll probably buy something that isn’t plastic, and most likely in 9mm. For the capacity argument. But then again what’s 2 bullets If you have an extra mag or 2?

  • Jsandow December 13, 2016, 8:53 am

    Your comments are generally valid. But they also apply to many other guns and chambering.
    1. 40 ballistics vary by factor. So hand load if it counts. Use slow flake powder (blue dot) to drive lighter (135-155gr) bullets fastest, and a slow burning ball powder like vvn350 for 180 to 200 gr (I’ve tested this extensively the combo works). Seat your bullets to the max OAL for minimum peak pressure (1.135″, though I find 1.140″ feeds fine in all of my guns). Use a strong taper crimp to hold the bullet in place, or even a mild roll crimp with a taper crimp second to smooth feeding.
    I’m getting extremely consistent 1180 fps with 180 gr xtp bullets (about 550 ft-lbs) from a 4″ barrel, no signs of overpressure.
    2. Use a gun designed for the 40 like HK usp40 or SIG 229.
    3, 4, & 5. See above, and work with a (supposed) problem- don’t cut it down. Anyone can do that. You just have to be or act more intelligent about your approach. Leave the ‘idiot-proofing’ to lower performance technology.

  • Jake Canfield November 25, 2016, 7:34 am

    A 10mm is not a good gun for edc. Studies have shown that in a home defense situations, most are 12 feet apart or less. They also found out that if you shoot somebody with a 10mm at 12′ or less, it will go completely through the subject and come out the back. Which creates a bigger problem of which, the 10mm bullet will go on through the body and possibly strike someone else. 9mm or 40 S&W would work just fine, if you have good aim (shot placement is what counts).

    If not 12 Gauge is universal language for “get off my lawn”

  • Shawn Ross November 2, 2016, 3:26 pm

    Hello, On the subject of .40 SW. I just bought a Performance Center Shield in .40. One of the reasons for buying this was because I heard you can trade out barrels for the 9mm. 2 guns in one package, no brainer right? Well I found barrels for the .40 the are spec’ed at 3 5/8″ths in length. Performance Center Shield spec’es at 3.1″ I haven’t found a source for a 3.1″ barrel anywhere. So ???, is the 3.1″ barrel a rounded up description from S&W ment to dissuade people from swapping barrels or is there a real difference.

    I know this is a bit off topic but I havn’t been able to get any info on this.

    thoughts?

    S.

  • joe October 29, 2016, 1:29 pm

    Anyone have any tricks in reducing the .40’s snappiness? This seems like the biggest negative. Personally I would like to shoot a .40 fmj-fn with minimal recoil and minimal low light muzzle flash for both target and defense. Not a fan of adding compensator holes.

    • Chris April 9, 2017, 9:44 pm

      Yeah, try an HK USP .40, it’s the best gun for .40. My USP Compact shoots .40 great.. It has a double spring recoil rod designed for .40.

  • Cody October 3, 2016, 8:37 pm

    Hey this glock fanboy might know what he’s talking about… Oh wait never mind guys.

  • James Smythe September 23, 2016, 6:33 pm

    -Of course .40 is significantly more powerful than the 9mm. Look at the muzzle energy of the hottest jhp personal defense loads out there – you have mid-high 400s for the 9mm and mid-high 500s for the .40. Same velocity, but larger heavier .40 bullet.
    Most 10mm jhp offerings can be had by buying hot .40 loads, through Buffalo bore, Underwood, etc. You can also buy hotter -10mm loads from these companies, but it’s way overkill for a personal defense round. Shoot one of these off in your bedroom you may never hear again. You can hunt with them I suppose, but only an asshole would hunt with a small handgun.
    -.40 standard pressure fmj range loads aren’t going to destroy or wear out any .40 gun, unless maybe it’s a pos like a Hi-point or something.
    -You can buy 9mm conversion barrels for most .40 guns but not the other way around, making them extremely versatile.
    Typical arguments against the .40 that as usual have absolutely no merit.

  • Alex S August 13, 2016, 10:54 am

    What a terribly ignorant writeup… Your assumptions lead me to believe you, sir, are a jackass.

    • S&W gut August 21, 2016, 1:57 pm

      Internet anonymity brings out the jerks, eh.
      Worthless comment!!!!

      • Jeff Phelps December 11, 2016, 5:41 am

        I’m not anonymous. And I also think your write up is off the mark. There are other companies that make guns besides Glock. SA makes a very nice platform for the .40. It holds 16+1. it’s well balanced and it eats up recoil like you’re shooting a .25. Try getting out of Glock country once in a while. I have been in love with my .40 since I bought it and I really bought it because I thought I could turn it and make some money. But I’ve been using it as my truck gun ever since because it was all that I need for that. And yes there is a perfect round for that function IMO. It penetrates car door steel (a .45 won’t and although a 9 might it will do far less damage after it goes through) and it penetrates windshields at an angle. Those are perfect of a gun to be carried in a car. I carry a .380 for CCW but I’m probably switching to a 9mm soon. It won’t be a Glock in case you wondered. I just get really tired of seeing people bash the .40 based on the products produced by just one company.

        • Robert S March 18, 2017, 9:24 am

          What kind of.45 rounds are you launching that won’t penetrate a car door?

  • Robert June 25, 2016, 8:30 pm

    An argument favoring the 9mm over the 40S&W (or 10mm short) can only be ego based. You simply can’t argue against the Physics. A 124gr. Projectile traveling at 1,100 fps versus the exact same designed Projectile, with the only variance being it’s weight; the second being 180gr. traveling at 1,100 fps. Kinetic Energy Transfer is basic Pyhsics 101,
    I believe a large portion of supposed “shooters” are largely those that play with their guns more than shoot them.
    When the Army changed from the SA 1911 to a modern DA/SA, they chose the Beretta in standardized NATO 9mm. Just like the movie “Smokey & the Bandit”, when it hit the movie screens, sales of Pontiac T/A’s jumped through the ceiling.
    The Army adopts the Beretta 92fs (M9) public sales went through the ceiling. Ego driven individuals invested in what they believe to be “The Best”, have a difficult time capitulating to a superior argument. They in fact in trench themselves and hold onto the belief that there’s no way they could not be wrong. Squelched by the 1986 Miami incident, they fell into the background until the fateful day that the F.B.I. changed their minds. Finally vindicated, they came out of the closet in droves. The F.B.I. is of course the same competent government organization that recently interviewed the Orlando Terrorist on three seperate occasions and released him from even basic survaliance. Oh Ya! I trust what they say. When they jump off a bridge, they will have all the 9mm fans following. Oh yes, just one last comment. I am sick to death listening to 9mm proponents arguing that bullet technology and more powder has made it equal to both the .40 &.45. Ridiculous! Yes you can jam 10 lbs. of shit into a 5 lb. bag, but would it not be easier to simply embrace the .357 Sig?

    • K Bayard June 30, 2016, 6:28 pm

      It’s not that the 9mm is equal to the 40 or 45 in power, the argument is that, for most people, shot placement is better with the 9mm and follow up shots as well are generally quicker as well. The difference in power between a hp 9mm +p round and even a light hp .40 S&W is basically negligible anyways in a real world shooting. The extra 60 or 70 ft-lbs of energy from a .40 will make NO difference at all. It’s not like a .40 has 900 ft-lbs of energy or something. The 9mm +p round will penetrate as far as a .40 any day, and that’s what really counts. It’s also a total and complete myth that any service pistol round will “drop” a bad guy any faster than another unless you are to get a well placed head shot. One should choose a service caliber round that he/she is most accuate with.

      • djw663 July 21, 2016, 12:14 am

        Where are you getting your statistics? The FBI is switching back to 9mm because their agents are sissies and are having trouble qualifying with the .40 the same reason the went from the 10mm to the .40S&W. I have a G22 Gen 1 and a Gen 3. I have never had a FTF or a FTE and at 21 feet, where law enforcement trains at, I can usually put two bullets sub MOA. Also the ammo for the .40S&W velocity is usually 1010FPS+ not 900 and the energy is almost 100 FT pounds more than the 9mm. In ballistics gel the 180 grain .40S&W consistently travels 12+ inches where the 9mm comes up an inch or two short. Yes, shot placement is very important but ware where you pulling the rest out of?

        • Rodger Smith October 28, 2017, 6:46 pm

          I forget the guys name but he does a YouTube. He’s got the clocks in 9mm and 40cal. He had better grouping with the 40 at 75ft and at 100ft . Not much better . The time 9mm was faster by 1.03 sec out of 5 shoots . Not much faster .. center block 9mm took 15rds 40cal 9rds . To destroy a cinder block. 40cal way better . In my opinion a 40-cal is a better Tactical round. The 10 mm who cares. 10 mm is fading away.

      • Jeff Phelps December 11, 2016, 5:44 am

        I don’t have any trouble at all double tapping my SA XDm in .40.

    • JACK LAUGHLIN September 13, 2016, 12:33 pm

      It’s not a 10mm and its bigger than a 9mm. Yeah and? 10mm is hard to find and I believe 40 is easier to get than 10. I truly think 9mm and 40 s&w are great cal. And so is the 10mm. It all depends on the shooter and their style. I think you just dogged on the 40 instead of giving good reasons not to carry. Let’s face it the 10mm isn’t a .454 haha see

  • Dalton June 13, 2016, 10:50 am

    Dude… You are just wrong on about everything you have said. If you don’t like a g23, then get a conversion barrel and shoot it as a 9mm for practice, and then when you want more energy, go back to the 40. And the 40 is not any more dangerous than any other caliber as you have stated. Reload your ammo and make it fit your needs. Also, quit sharing poor information to those who don’t know any better. You should not be giving advice to anybody.

    • Elcapitan June 24, 2016, 3:08 pm

      Well said. If I am really serious about self defense I would carry my . 357 626 SW stainless 4″ with Buffalo Bore ammo. Now that really penetrates and it is as dependable and smoooooth as they come. that would be my first choice period. Its accuracy for me is almost as good as my .357 Winchester repeating rifle at 200 yards.
      Every article I see lately is that both cops and robbers survive multiple 9mm handgun woulds more often than not. My second choice would be my Ruger 40 with the 15 round clip. Nothing like having plenty of backup ammo.

      This article is nothing but confision.

    • djw663 July 21, 2016, 12:45 am

      I have a conversion barrel for my G22, .40S&W to 9mm. It works flawlessly I’ve put 70 rounds through it and no FTF’s or FTE’s about the only thing is sometimes the casing hits me on the top of the head, I chose the AlphaWolf brand. I got it A) because the FBI is switching back to 9mm B) ammo is less expensive. C) My daughters prefers the 9mm, but are just as good a shot with the .40S&W. D) it was only $135.00 for conversion with the threaded barrel. E) I can use my same .40S&W magazines. F) it is extremely accurate. But when all is said and done my dad was an undercover Narcotics officer for the DOJ, Rangemaster and taught officers all over the state; the .40 , in his professional opinion, is the best way to go for defense.

      • J Indy August 31, 2016, 11:05 am

        Use .40 mags for 9mm? That can’t be reliable or recommended. I know you can use them for .357sig but can’t see it working with 9mm.

        • BCD March 15, 2017, 11:54 am

          I also have a g22 and got a 9mm barrel for cheaper shooting at the range. I got a g17 magazine for shooting 9mm. However one time I forgot to switch magazines and loaded up my g22 mag with 9mm and it fed no problem. Since then I have kept using my g22 mags for 9mm and with several hundred rounds through them they have yet to have an issue feeding 9mm.
          For range shooting the g22 mag works fine. However if I were to use the 9mm barrel/round for home defense (I don’t, I keep it at .40 at home) I would use the g17 mag just to be safe.

  • Barry Newman May 17, 2016, 3:59 am

    I just believe your rong.

  • reopoman April 18, 2016, 6:27 pm

    I have to whole heatedly disagree with you on all of your points.

    You are just flat wrong on every point you tried to make. If this article was written better I may feel the need to explain further but the author of this column does not come across to me as someone that has any real world experience with either of these rounds.
    How do I get the opportunity to write columns like this for people that really want useful information?

    • Greg April 18, 2016, 6:58 pm

      The writer must have been bored, and decided to write a trolling article. No other plausible reason for such a poorly constructed “report”.

      • Mark May 14, 2016, 1:25 am

        And he shows a picture of a ruptured case which obviously was shot in an unsupported chamber. Then claims all this crap about setback and overpressure blah blah blah. Let me guess, that shell came from a Glock?
        Same regurgitated stuff over and over

    • Rodger Smith October 28, 2017, 7:01 pm

      It’s because the people that are riding these. Are the nerdy kids that used to race home and watch Star Trek and played with their computers all day. Bought a gun just to say he has one rarely ever shoots it. They just need to hire people with experience. Have them write it and then an editor can rewrite it. Just to fix the mistakes. I had to rip into another writer he was a Glock 9 fag. Ripping the 40. With false info. When you’re a writer it’s stupid to bash any gun or caliber you lose readers. Just explain the differences. Get excited about the good . And don’t harp on the bad. 45 40 9mm 380 10 mm they’re all good they have their differences. But I find the 40 caliber to do more Tactical. To me it meets that middle ground.

  • PAtrick March 21, 2016, 1:02 pm

    So sick of Glocks. They are a damn fanboy gun. They feel like your holding a 2×4 in your hand and handle like one too. They aren’t even an American Company and on top of that Austria was PRO-NAZI. Austria is also not a member of NATO, so a country who is NOT allied with the US or our counterparts. I would never fork money over to this company for their over priced block guns.

    • Tracy May 8, 2016, 7:26 pm

      But they are as good as anything you own.

    • Tracy May 8, 2016, 7:28 pm

      But they are as good as anything you own.

    • Lyle Lafayette May 31, 2016, 12:32 pm

      First off we sold oil to and gathered (captured) technology from the nazi world business everyone dabbled in… Making America what it is today…… Im not a ” glock fanboy” so to speak but iv e never had anything more reliable. Glocks are built to function, not to look good or impress grandpa you know

    • Wake_Up_America August 12, 2016, 9:21 pm

      Oh, you poor, silly, ignorant youth you…I have several Glocks and they are excellent fire arms. Never had 1 problem with them at all. I also own Sigs and they are sweet guns as well. Nothing wrong with Glocks, don’t hate girly-man as Arnold would say…

    • T October 23, 2016, 3:55 pm

      So you are not supporting Glock because Austria was nazi friendly over 50 years ago. What about your own us goverment and the importing of nazi officials into the us under operation paper clip. The founder of your beloved NASA was a nazi. General Reinhard Gehlen, former head of Nazi intelligence operations against the Soviets, was hired by the US Army and later by the CIA to operate 600 ex-Nazi agents. Should I go on Patrick?? The hypocrisy is amazing you irnorant fool And lots of Glock’s are made in the us. I can’t say I have ever had a issue with my Glock’s not a single one or my dogs But hey personally made in America is the new made in China junk just like there cars!

      • Todd knowles December 3, 2016, 8:32 pm

        Without a. Doubt, you must be a brit. brits are so jealous of the United States. Pathetic

    • Randy April 29, 2017, 11:28 pm

      Like the others said the US was not completely innocent in WWII. The US allowed IBM to sell computers to the Nazis to tally up their death camp totals before we got involved in the war. I have Sig, Glock, HK, Ruger and Smith Guns. They are all good. Secondly, most Springfield XD* are made in Croatia. They are good too. This does not need to be a GM, Ford, Dodge, Toyota truck type thing. Get what you want. Just go to the range and enjoy.

  • Greyghost February 20, 2016, 10:31 am

    Ive read several reports and the 2 calibers that have the best record for one shot stops are the 357 mag and the 40 cal these are the top 2 calibers, And the best report I read was by a coroner I think it was ballistics by the morgue or morgue ballistics any how this mortician has kept a record over several years on gun shot wounds and one shot stops and as far as handguns go these are the 2 top calibers, To me this is real world testing, The reason the 44 mag and 45 were not up there is most people miss the 1st shot with those 2 calibers, These are the 2 calibers I carry and did so before reading this article, Its a personnel choice but in MOST cases the 9mm and 380 are bottom of the list for stopping power. So think what you want and carry what you would trust your loved one or your life to get the job done, If you have a 16 shot 9mm and have to double tap you have an 8 shot

  • Greyghost February 20, 2016, 10:13 am

    The 9 s fine, But the 40 offers more plain and simple, It will shoot through material that will stop a 45 and it does it with authority is it snappy in smaller plastic guns yes, But you take the glock 35 and it tames recoil down to 9mm but still produces 40 velocities and 40 cal impact and with 15+1 capacity it will get the job done just fine if you need more thump go with the 45, You can swap barrels in about 2 min and practice with the cheaper 9mm or go 357 sig. You buy a 9mm and that’s all you get, I get 3 calibers in one gun, Its a no brainer for me. Carry what you feel comfortable with and can shoot well, One of my favorites is a SP101 with a 4.2″ barrel I only have 5 rounds but 5 357 mag rnds should do it, In most cases, Other than that the 40 works for me just fine

  • Paul R. Jones February 13, 2016, 2:29 pm

    I want to hear from someone who has actually shot someone in self defense and finished the job. They know what it takes to negate the threat.

    • Patrick March 21, 2016, 12:59 pm

      Shot a guy in the chest 2 times with a M9 (Beretta 9MM) he stopped dead in his tracks and fell. This was with ball ammo as well, HP aren’t genova authorized. So it all boils down to your shooting. If you are inaccurate and cant aim, specially under pressure, then bigger is better. If you are calm cool and collective, smaller ammo will work. Center mass is center mass….Not the shoulder or the lower abdomen, you want to hit the sternum. 2 Shots in your sternum I don’t care who you are or how hopped up on drugs you are, you are going down. Sadly ive shot people with all sorts of sized bullets…..5.56, 7.62, 40mm grenade, M67 grenade. Any round will stop a person just depends where you hit, that’s all. Shit I’m sure a 22lr will kill someone instantly with a heart or tbox hit.

      • JimmyJam June 27, 2017, 6:54 pm

        It will, I’ve had to do it….

    • Bruce Davis April 19, 2016, 6:38 pm

      Was on a stakeout for armed robbers. Shot guy who was shooting at me with 45 ACP 230 grain Winchester Ranger HP. Hit him in chest and he dropped like a rock. I personally know of at least a dozen cases where 9mm failed to stop bad guy and several others where 40 caliber did the job. In one case an off-duty officer shot an armed robber with his off duty 9mm using HP’s eight times (his on-duty gun was a 45ACP). After being hit the guy emptied his gun shooting an innocent bystander, ran out side the grocery store he was trying to rob before finally dropping down DRT. Not a confidence inducing incident for 9mm’s.

  • Tom Imbordino January 4, 2016, 11:27 pm

    Whether the round is a .22 or a .4r magnum, shot placement is EVERYTHING!
    As the old saying goes, “I’d rather get one center-mass hit with a .22 than 6 misses from a .44 magnum!”

  • Lloyd Jones December 9, 2015, 6:51 pm

    For the record the .40S/W is my favorite caliber. I have 9 different .40S/W handguns. Plenty of ammo out there and plenty of reloading components for those who shoot a lot. I’ve never had a case split, factory or reload. The .40 S/W is more powerful than any 9mm and more controllable than any .45acp.
    I’ve got 5. – 9mm handguns and 6 in .45acp. I’m 56years old and shot since I was 18. I think I have some experience and know of what I speak. The .40 S/W
    Is A Great Caliber!

    • Luca April 14, 2016, 4:34 pm

      The best amunition calibre 40sw

  • Robert December 9, 2015, 12:19 pm

    From what I understand in the history of the 40SW, it would seem to me that the 10 mm is the quintessential committee designed pistol… like a group of people got together to design the perfect pistol… got everything down on paper, reviewed, approved, and put into production prior to ever testing… only to find out that the recoil was too much for many in LE for whom it was designed. Yeah… the 40 may be a poor compromise between the 9 and 45, but in real world use for its intended purpose, it seems to be what the 10 mm should have been. And I’m not bagging on the 10mm either. I’d happily carry one if it were available in a platform I like at a price I could live with. And with all that said, my main carry pistols are a 9mm Shield and a 380 Bodyguard… in the woods, a 44 Redhawk.

    Truly a disjointed article riddled with a mix of true, contradictory, false, and dubious information. C’mon, gunsameria… you can give us better than this!

  • Keith Simons December 9, 2015, 11:11 am

    Interesting, This must be an old reprint. Look at the dates on the responses. December 2014 then a jump to 2015. I for one like to .40. Have a FS and a shield M&P. Reloads are easy and recoil is not an issue.

  • Jason December 8, 2015, 11:55 pm

    I’ve have had the Smith shield for about a Yreka now and put a couple hundred rounds though it not a single problem,easy to conceal and with liberty ammo it’s a lot lighter too.recol is minimal for me and my most comfortable gun to carry. The liberty ammo is very fast and for my situation the best out there ” my opinion ” ..I’m sure everyone is different but I own and have owned 357 -22 for me the 40 shield is my go to. The hot liberty ammo makes a huge difference for me..my 2 cents. Although I wand a 45 kimber, I’ve always wanted a kimber 45 mid size but will have to budget for that one. I’m am also wanting the signed p238 in a 9mm just cause I think it’s a cool piece, gonna be hard to beat the shield for now though.

  • Dave December 8, 2015, 3:07 pm

    What an incredibly ignorant article. I can’t tell if this is serious or not but I’ll dissect it piece by piece to show what a delusional 10mm fanboi the joker who wrote this is.

    1) It isn’t 10mm – No shit Sherlock
    2) Most .40 caliber guns are just retrofitted 9mm’s – So what? Most 10mm’s are retrofitted 1911’s (45 acp) and CZ75’s (9mm).
    3) The 40 can be dangerous – Every gun can be dangerous, but I’ve seen more blown up 10mm’s from idiot fanbois using excessive handloads and boutique ammo than any other cartridge. The 40 case is actually much stronger than the 10mm case and can handle much higher pressures. If the 10mm is so powerful why are people blowing up their guns trying to get more performance?
    4) Limited ammo supply – Really? 40 S&W is the second most common handgun ammunition in the world. Everyone sells it, good luck finding 10mm though and expect to pay a lot more for it.
    5) Limited capacity for limited guns – You’re a fucking moron who’s trying to justify your choice of 10mm because you’re insecure.

    • Rob June 7, 2016, 10:43 pm

      Lmao! nail on the head! Exactly what i was thinking. Especially when the shitbag claims capacity as a main reason for 9. 2 rounds???? Right. I think that soft dudes that can’t handle the .40 just use capacity as a reason to justify their decided lack of power.

  • KC December 30, 2014, 3:49 am

    I have a Magnum Research / Baby Desert Eagle in the 40.cal. I love it, it’s one bad ass weapon, ain’t no baby, I have to admit it is heavy but I didn’t like the Glock, you can see day light through the side, I can’t help but wonder how much powder escapes or blows out of it when it’s shot. Surely there is some discussion about it, I mean there is a big gap that you can see light through. Anyway I chose the 40 cal. Magnum research Over the 9mm Glock and am glad I did…. Keep it in the ten ring….KC

  • LarryE December 4, 2014, 4:31 pm

    My Glock 23 Gen 4 (in .40 S&W) has the recoil of a 9mm, thanks to the gen 4 dual recoil springs. I enjoy shooting about 100 rounds in it when I go to the range, after shooting my rifle. I find it to be perhaps just a little less recoil than my old Ruger P944 (also a .40 S&W), but both are fun to shoot. I went to .40 S&W over 15 years ago as it has less kick than my .357 magnums (3 models of Rugers), less flash, and more rounds, while having only about 10% less energy than the magnums. I still think .40 is the optimum round. Check the charts–a .40 has the same or even a little more muzzle energy than the .45s, and more rounds capacity as a bonus–that settled it for me.

  • Lee Blackman December 1, 2014, 4:14 pm

    And the great caliber debate continues… Seriously, I guess everyone missed the memo, it ended about 20 years about. But its funny how once what was once old, gets forgotten, and becomes new again.

    So here’s your update to get with the times….. A 40sw can do anything a 45acp will and a little more (its a higher pressure cartridge). Don’t look at me that way, go do the research, its out there and easy to find. The 9mm just can’t do what a 40sw can, again, just go look. The 40sw will fit in smaller framed guns than the 45acp, because of the shorter length of the cartridge. This means there are more options on the market than the 45acp. The .40sw is a street proven man stopper, there is no question about it. I mean seriously, its receive the man stopper of the year award every year since its introduction. There are more 40sw makes on the market that will meet or exceed the FBI protocol than any other cartridge. So to the ammo availability debate, yea, walmart was sold out of the cheap winchester white box value packs, but I really hope your not carrying that crap, anyway. There is more than enough established autopsy and wound ballistics research done, easily found with a simple google search (do it before you eat). I don’t mean imperial data, I’m talking actual scientific.

    Spend 20 minutes doing some reading with reliable sources, and what you will probably find that most of what the author of the above article states is myth or just straight BS. Kinda like when you go try to find the research to disprove the reputation of the .40sw. Instead of scientific data, you end up with articles from grumpy old farts who still carry single stack 1911’s, and shoot weaver stance will hugging the cover at their local IDPA matches thinking they are honing skills that will keep them alive in a gun fight. Or the kids who live in their mom’s basements, who don’t actually yet own a handgun, but if they did it would be a 1911 in a 45, and they like to regurgitate what those old farts are saying.

    • Hillary November 26, 2016, 6:20 pm

      So that’s why the FBI is switching back to 9mm and recommended the same to all federal agencies?

      • Trump December 4, 2016, 8:38 am

        No, they are switching to 9mm because it is cheaper and the FBI agents who rarely if ever fire their sidearms were having trouble qualifying with the snappier more powerful caliber. A good choice for them then I would say as I’d rather they hit their occasional target than send a slightly better round into some bystander or other innocent.

        • Mastro May 22, 2017, 9:12 am

          Good point- the REAL lesson of the Miami Shootout was call in SWAT when facing guys with assault rifles- especially ex-Rangers who know how to use them.

          Today a tactical team armed with M4’s will break down your door if you double park your car (a slight exaggeration)- frankly the FBI agent doing forensic accounting is fine with a 9mm.

  • Thana November 28, 2014, 3:31 am

    I don’t like .40 S&W because the brass look like .45 ACP and I always get them mixed up with my .45 brass and I don’t even own .40 S&W . If it happen too often I will have to buy one soon

  • bigdaddy November 27, 2014, 8:14 pm

    I SHOOT A GLOCK 19, AND A GLOCK 20C. I ALSO SHOOT A XDM 40 AND A XDM 45. I PREFER THE GLOCK 20 COMPENSATED OVER THEM ALL. IT HAS THE RECOIL OF A 19, AND MUCH LESS THAN THE 40 AND 45. MY PERSONAL PREFERENCE.

    • D May 5, 2016, 1:02 pm

      YEAH! ALL CAPS BRO!

  • BlueBuddha November 26, 2014, 3:33 am

    It is refreshing to finally see so many people calling a spade a spade. This pathetic round would never have existed if .45, 10mm & 9mm had been around when it was designed. Even so, the tepid manner with which it was adopted by law enforcement agencies around the world (whose members actually trust their lives to their weapons on a daily basis), and its sad performance in actual use, should be a dead giveaway that this was simply a stopgap measure until better, newer rounds like 9mm came along.

    If you were unfortunate enough to purchase a firearm chambered in .40 S&W, you’re kind of a loser at life. However, I’ll help you out a bit. Simply contact me, and I will give you 20 cents on the dollar for your laughable firearms and pathetic ammo. I know that seems like a tough pill to swallow, but you’re the dope who actually purchased this obsolete caliber, and I’ll at least give you some money you can use toward a modern 9mm or .45 ACP weapon.

    Why am I interested in this garbage you ask? I’m a collector of failed calibers, and you’re lucky I’m willing to take this junk off your hands.

    Thank you.

    • Mikelasnicov November 26, 2014, 2:23 pm

      “This pathetic round would never have existed if .45, 10mm & 9mm had been around when it was designed.”

      @BlueBuddha
      “and its sad performance in actual use, should be a dead giveaway that this was simply a stopgap measure until better, newer rounds like 9mm came along.”

      Hey stupid, the 9mm and the 45ACP are both over a hundred years old. The .40 S&W came out in the early 90’s. Even the 10mm came out first, it’s the parent cartridge for the .40. You have never even owned a gun and know absolutely nothing about them. What are you even doing on this site?

      • BlueBuddha November 27, 2014, 5:00 am

        Read my post, in its entirety, again. Now read your post. Decide who’s stupid. What am I doing at this site? Exposing stupid people, apparently. If you had read my entire post, instead of seizing on a couple of sentences in your eagerness to at last prove yourself more intelligent than someone (or anyone), you may have reached a different conclusion. But I doubt it.

        Since I cannot draw you a cartoon with word bubbles, I’ll do the best I can for you:

        Go to this site called Google. In the little box on that page, type in “sarcasm”, or you could just C&P the word from this message if typing is beyond you. Hit the big key that says “Enter” on your keyboard. Spend 2 or 3 hours reading a couple of definitions. For extra credit, look up “keyboard commando.” Slink away.

        Thank you.

        • undeRGRound December 29, 2015, 2:25 pm

          I detected very early on 😀
          Blue, did “Mikelasnicov”send you his “foughty” yet? 😉

        • Saibubbasez December 14, 2016, 10:11 pm

          Now, now. Be nice to the riders of the short bus.

    • RAC55 November 27, 2014, 3:12 am

      Mr. bluebuddha better get an education on firearms history before he spews these kinds on falsehoods. The .45 ACP and the 9mm Luger rounds predate the .40 S&W by 8 to 9 DECADES….as in PO8 (1908) Luger and 1911 .45 Automatic Colt Pistol. I’ve never seen any examples of pre WW1 Glock or S&W .40 caliber pistols kicking around. If you happen to find one, I’ll sure as hell buy it off you, because seeing that it went through a time warp, It’ll be worth a fortune…..

      • BlueBuddha November 28, 2014, 1:08 am

        Just…wow. Nobody will catch you guys out, that’s for sure. I guess you showed me.

        • undeRGRound December 29, 2015, 2:26 pm

          hehee some people are sssslloooooooooooooooooooooooooooooowwwww………..

        • Jimbo February 22, 2016, 11:41 am

          Wow! A lot of these peeps can’t see sarcasm right in their faces…I’ll join Blue in his offer, ‘cept I’ll up mine to $.40 cents on the dollar.

    • Rudy P Gabo May 30, 2016, 12:42 pm

      ” this pathetic round would never have existed if, 45, 10 mm and 9 mm had been around when it was designed.’
      This statement is wrong. I will leave it at that, because I do not want to ‘legislate’ stupidity.

  • Martin Pierce November 25, 2014, 11:24 pm

    I’m with you. 10 mm & .45acp is my Steak & Onions. I have a series ’70 Govt. & a Glock Mod.20 I bought early on when they first arrived 1st. gen. Still shooting it a couple barrells later. When it first came out you couldn’t find ammo or brass very easy; so–I hit the gun show & picked up 5 thous. new star brass @ the show. As 4 the .45, once fired brass was every where & I have an oil drum full of it. Obviously, I reload for same. Never had a problem with star brass. Not that hard to find new. Bought my wife a Baretta 92f when I got my Glock & reload 4 hers too. Few fmj’s, but mostly Hornady XTP hp’s., new brass, again Star & ww231. I will reload most anything, but usually other of .30-.30, 5.56, .30-06, shotgun 12 ga. and slugs with a Pacific 366 reloader.

  • Dave November 24, 2014, 9:37 pm

    Dave,
    It’s “therefore” not “their for,” and “there” not “their.” Writing is like shooting, one needs to master the basics before putting one’s skill on public display. This whole thing is Shakespearean, “Full of sound and fury and signifying nothing.” I think I’ll go downstairs and whip up some more reloads for my .38 Super.

  • King Ferdinand of Argon II November 24, 2014, 7:57 pm

    Glad you’ve found your home with 10mm. It’s personal preference. I love .40S&W, detest 9mm and have little to no opinion on 10mms.

    The idea that 10mm is powerful enough to kill anything on four legs is a joke. I live at what the state calls, “Grizzly bear-Urban Interface.” Bears come in my yard. Most people have no idea how big a bear is until they’ve seen one up close. I wouldn’t take on a Grizzly or Black Bear with any handgun. Even a .44 mag or .454 Casull. You can bang away all day with any handgun and it just isn’t going to stop a 800-1200lb. grizzly from making it to you. Cars hit moose and the moose just walk away. I doubt any handgun is going to put a moose down in the time it takes the moose to stomp you to death. Either case, since ungulates and ursine predators can accelerate to around 30MPH from a dead stop in a matter of seconds, you’re probably not going to have the opportunity to get off more than a couple rounds before moose or bear seriously mauls or kills you.

    When I travel in the bush, it’s either a M1A1 or 12ga with slugs.

    • Jimbo February 22, 2016, 11:47 am

      “The idea that 10mm is powerful enough to kill anything on four legs is a joke.”

      It may not be approved to bring down the African Big Five, but it’ll give pause to a Grizzly or Moose. I have a pal who went on a hunt 40 years ago in Canada and took a Bull Moose with a .41 Mag and that’s essentially the same ballistics as a hot 10mm. And a S&W .500, a handgun mind you, will most assuredly make a Grizzly lay down and play nice.

      • John March 19, 2016, 10:37 pm

        For your friends sake Jimbo I hope he was using a long gun chambered in .41 Mag on that Canadian hunt. Using a restricted weapon, (AR type semi-auto rifle, long gun with a barrel shorter than 18.5inches, or any handgun), while hunting is punishable by federal prison time as well as loss of the firearm, & permanent loss of all firearm purchasing/possessing permits & licences. In the case of a non-resident being caught using a handgun in Canada the gun would be confiscated & the offender being deported with lengthy or even permanent bans on re-entry into Canada.

    • Wake_Up_America August 12, 2016, 9:29 pm

      Oh little man, you are sadly mistaken master-baiter…10mm will take care of ANYTHING in lower 48.

  • BUURGA November 24, 2014, 7:40 pm

    As has been mentioned many, many times, it is shot placement not caliber that seals the deal. There are plenty of videos of police hitting attackers with multiple .40 and .45 rounds and the attackers keeps on coming. And for all of the ‘stopping power’, blow the target to hell boys, remember the court allows you to fire TO STOP AN ATTACK. Any more than that, and you had better have a good lawyer.

  • Clint November 24, 2014, 4:49 pm

    If you hate the .40, DON’T carry one ! I like the 10mm,and the .45 acp also. However 10mm ammo is difficult to find, and is a bit expensive when you do find it. I have shot magnum revolvers most of my life, so , I find recoil from a .40 S&W, .45acp,10mm to be mild. The .40 was a compromise cartridge for law enforcement,& I think it is a good compromise .Many officers & agents couldn’t handle the 10mm .The .38 special,& 9mm were not getting the job done ! Period !

    I’ve been in law enforcement 30 years, and have carried several calibers in that time frame. I know what works,& what doesn’t . .38 special and 9mm have very little recoil ,and makes it easier to hit your target,which is the most important issue in a self defense situation .However there is always a trade off. If you have to shoot a BG 15 times with +p+ 9mm,& he’s still standing, shooting back at you after 15 torso hits, you’ve got a problem . Our military wouldn’t be dropping the 9mm if it was such a great a stopper … Handguns, in general, are not 100 % stoppers .

    Practice, practice, practice, & use what works for you . The caliber that you can control & hit your target consistently, creating the most damage, is the caliber one should use .I can think of at least one or two draw backs for every handgun cartridge . I like a .357 magnum revolver,& have used one for self defense, and found it to be a good stopper. However the muzzle blast will blind you at night ! So, it’s a day time defense caliber , from actual personal experience . So, there is a perfect scenario of a trade off. Great stopper, but only for day time hours. Same with a 10mm ,unless you download it.

    So, it’s all a trade off, and a personal decision . I think the 40S&W, even though the cartridge pressure is a bit high, is right there with the .45acp in terms of an all around, day or night defense caliber. Are they perfect ? No, because no handgun will fill all needs.
    If you have the luxury to carry a 10mm, .357 mag , .357Sig, 9mm+p+ for daytime use,& switch to another caliber for night time use, then you are blessed ,because , all of those calibers will blind you in a firefight at night . I never know when I may be in a deadly encounter, so ,I carry a handgun caliber that has constantly proven itself day or night in combat situation, using the best low flash, dependable ammo . Usually a .45acp, or the .40S&W . I know some will say ” they make standard pressure 9mm & 10mm “. True.., but why would you want to carry it. A downloaded 10mm is a .40 , &a downloaded 9mm,is a .38 special.

    Bottom line, it’s a personal choice . What I have learned from actual experience, is when a deadly encounter comes your way, you shouldn’t have to shoot the BG 15 , or 16 times.It shouldn’t be an all day affair,because you’re carrying an inadequate caliber .

    I don’t hate any caliber .Some are better than others in one regard or another .They all have a plus,or a minus . Practice ,shot placement,great ammo, and the largest caliber you can master are the key,as hollow points don’t always expand & perform the way advertised on human beings,or 4 legged critters either .

  • Tahoejohn November 24, 2014, 3:56 pm

    Like Joseph I have many calibers in handguns and rifles. I love to shoot every one of them. They are all different. My Ruger SR40 is one of my favorites. I have the SR9 as well and can hardly tell a difference.

  • VietVetSFC November 24, 2014, 3:43 pm

    Any projectile delivered with accuracy and sufficient energy transfer will do the job. The point is not whether the caliber is sufficient for self defense, it is the skills of the shooter that make the difference between going home upright or in a box.

    Personally, I prefer .45 ACP for the job since it is a large bullet, moving fast enough to penetrate to the core and in doing so dumps the energy into the target. It is a proven caliber with over a century of records behind it. .32 ACP will serve adequately in the right hands. The real solution is training and keeping your skills sharp.

  • Bart Benedict November 24, 2014, 3:30 pm

    It’s the 10 mm I find questionable. What’s it good for? A high capacity 9mm, .40 or .45 acp with quality HPs make more sense for self defense against human adversaries….or for wolves, etc. And when I go into bear country up here in my part of the world I carry nothing less than a .44 Magnum with 300-grain bear loads… and sometimes a .454. Are you too proud to carry a big revolver that’s clearly better than the 10? I haven’t found a 10 mm cartridge for sale in my locale in years. In this light there’s little need for the 10 mm and probably why so few guns are chambered for it..

    • Wake_Up_America August 12, 2016, 9:37 pm

      A 10mm is a very worthy round and will take care of anything in north america, lower 48 no doubt. officials use 10mm against polar bears, so come on boss b junior lil boy.

  • steve November 24, 2014, 3:15 pm

    when push truly comes to shove …i’m grabing my Glock 27 EVERY TIME….i own CZ’s HK’s Kimbers Colts SW’s . i’m grabbing the 27 first.

  • BigR November 24, 2014, 2:39 pm

    I like the 9mm, .40 cal. and the .45! I love my the 9mm Springfield EMP , .40 cal.Kimber Ultra, or my Wilson Combat Compact and a full house Les Baer in .45 cal. As you can see, I prefer all 1911 pistols, so no matter what I carry, I was taught how to use them and I’m comfortable with them. I carry the 9 or the .40 mostly, because of the lighter weight and their concealability. None of the four have ever jammed or stove piped, ever. With the different types of hollow points on the market and good shot placement, a threat can be stopped with any three calibers I’ve mentioned. Another important aspect of self defense is “be aware of your environment”! Don’t get caught with your pants down! I don’t own a 10mm, but I’ve fired them before, and I’m not particularly crazy about them. My Wilson .45 has a 22 lb. main spring, and the recoil is negligible, but that’s just me. Of course, Wilson Combat and Les Baer 1911’s are excellent weapons for self defense. There are a lot of good 1911’s in the market today, I’m just touting the one’s I own, because I practice with them all the time. I’m not knocking Glocks and others like them, I just go with the ones I’m most familiar with.

  • Gary November 24, 2014, 2:27 pm

    Which caliber is best? That’s like asking what car is the best. Smaller hands can’t control 10 mm and desert eagles well; weaker hands and wrists like my wife don’t do well with heavier recoil. My solution is shoot the biggest caliber that you can shoot well. If your groups are half the size with a 9, then use it with good hollow points. I’ ve heard a medical examiner state that when the bodies roll in, he can’t tell the 9 from the 45 wounds until he digs out the bullet and measures it. What stops the perp has more to do with reaching the vitals, not diameter. My answer: i got at least 1 of each, with matching carbine as a set. Ammo shortage solved.

  • JSmith6 November 24, 2014, 2:13 pm

    Won’t stop anyone past 25ft????? Are you serious???? Did you not see “Lethal Weapon 1?!?” Riggs totally did that guy, (in an elevated position AND behind a wall) with his Beretta 92. DIPLOMATIC IMMUNITY HAS JUST BEEN REVOKED AUTHOR!

    “Caliber don’t matter.” Abraham Lincoln, sourced from Wikipedia

  • Joseph November 24, 2014, 12:30 pm

    I have several .40’s, .45’s, 9mm’s and .380’s and I carry all of them. To rant about one caliber being above another is a waste of time. Carry a gun and shoot your threat until you’re empty

  • steve November 24, 2014, 11:32 am

    my comment is, the companies that make the guns the forty wears out, need to make better guns . never heard of the 10mm till after I bought my 40s&w witch means there are few 10mm in my tri-state area. my reason to buy a 40sw are ballistics are close to 45acp cheaper ammo than 45acp and just as easy to find as 9mm. A 10mm is no good to you if you cant get ammo .

  • Todd November 24, 2014, 11:16 am

    I own handguns in .40 ( Shield, Glock 23) and 9mm (Glock 26 Sig P938) and .45 ( Para Usa 1911)
    The difference in recoil between each is negligible to me . I like the more capacity in the 9mm but in a shtf situation I know exactly were to get .40
    You do know about conversion barrels right?

  • Mike Nichols November 24, 2014, 10:45 am

    I believe your are giving the S & W 40 caliber a bad review, I switch to the M & P Smith and Wesson after I had so many jamming problems with my 1911. The 1911 was in and out of the gun smith with almost all moving parts replaced but they could never solve the jamming issues. I have put over a thousand rounds through my Smith and Wesson and have never had a jam. I clean my guns ever time I shoot them but I have grown to love my Smith and Wesson M & P 40 Caliber. It is accurate never jams and is very easy to upkeep and the ammunition is much less expensive than the 45 ACP.

    Best Regards,
    Mike Nichols

    • BigR November 24, 2014, 2:43 pm

      @Mike Nichols
      What kind of 1911 did you own?

  • Mike Nichols November 24, 2014, 10:44 am

    I believe your are giving the S & W 40 caliber a bad review, I switch to the M & P Smith and Wesson after I had so many jamming problems with my 1911. The 1911 was in and out of the gun smith with almost all moving parts replaced but they could never solve the jamming issues. I have put over a thousand rounds through my Smith and Wesson and have never had a jam. I clean my guns ever time I shoot them but I have grown to love my Smith and Wesson M & P 40 Caliber. It is accurate never jams and is very easy to upkeep and the ammunition is much less expensive than the 45 ACP.

    Best Regards,
    Mike Nichols

  • Pete B November 24, 2014, 10:37 am

    I enjoy reading comparison articles and do not mind getting loads of stats being thrown at me regarding different calibers and why this one is better than the other. I have found the .40 S&W the happy medium between the 9 and 45, and I have owned both in the past. Plenty of stopping power and the rounds aren’t that much more expensive and sometimes, pretty much the same price.

  • Robert November 24, 2014, 10:22 am

    I chose a 10mm over a .40 and will never regret it. I have a 9mm 92FS and wanted something substantially bigger. It is the perfect round for most who thinks bigger is better.
    I don’t believe there is a more powerful round of any kind that can still pack 15 or so in the magazine (sorry Desert Eagle lovers) and be had starting at $500.
    The point missed in regards to the FBI was one of over-penetration. The 10mm is likely to be a serious hazard to innocents behind the perps. The 10mm actually came out with better ballistics than originally planned (200gr at 1200+fps).

  • petru Sova November 24, 2014, 10:20 am

    I agree with everything the author said about the worthless .40. But here are a few more. 1. Guns fail mechanically more often with the .40 because parts wear out and break more frequently in the majority of guns chambered for the .40 because the guns were never designed to handle the increased pressure and recoil of this .40 caliber. More and more police departments are ditching the .40 because of the expense of repairing them and the fact that they may fail when needed most in a gun fight.

    2. The .40 has no air space in the cartridge when loaded to full power with the 180 grain bullet which means that if bullet set back occurs it is way more likely the gun will suffer a detonation than other calibers that have more air space in the cartridge. The other calibers were designed this way as far back as 1896 with the Mauser Broomhandle .30 cartridge, something todays design geniuses forgot about when the designed the .40 S&W. As a result todays factory loads in the 180 grain cartridge are loaded way down to anemic levels.

    I am rather amused at some of the other pro-40 responses in regards to them believing any cartridge will knock a living thing off of its feet. Its amazing how long such myths have been around. Pure simply physics without even actual physical testing (which has been done) prove that no cartridge will knock a man or animal down because of its momentum or its diameter or its weight including the 700 Nitro express.

  • JAY November 24, 2014, 9:58 am

    The worst part of this blog article is that someone who doesn’t know any better might actually believe it! You’re basically advocating the 10mm, which shoots the same bullets the .40 S&W can (although the .40 has much better options via commercially loaded modern JHP ammo) but only at a slightly higher velocity despite being bigger and heavier than .40’s, not to mention more expensive.

    If I wan’t more power from than a .40 can give me, the 10mm isn’t a logical choice, it’s then time to bring out the big bore revolvers. As someone who’s handloaded for both for a long time, if I take a Glock 20 and run a 180gr XTP to say 1350 fps and then take a Glock 35 and run the same 180gr XTP to 1300 fps, where is the clear advantage? No living thing will know the difference and the .40 uses less powder to do it, weighs less and is less expensive to shoot.

    It’s true that the .40 can be dangerous, but you should at least be honest that ALL cartridges can be dangerous and they’ve all blown up (9mm, .45’s, .357’s, 10mm’s, .44’s, etc). From what I’ve read in forums a number of people have had issues buying boutique 10mm (loaded nuclear hot) and having the cases rupture in their 10mm’s. So why pick on the .40 when it’s no more or no less dangerous than anything else out there?

    Also while you talk up the 10mm in favor of the .40, which is only marginally faster if both are loaded to full potential, you also come out and say the 9mm is somehow also better than the .40. Sure it does have slightly better capacity but from where I come from, a G23 with 14rds is still pretty good, even if a G19 can hold 16rds, that’s not much of a gain. The 9mm is a very logical choice for sure but I’d rather be shooting bigger and more powerful bullets at the expense even if it costs me two bullets.

    You prefer the slightly more powerful, eerrrr, slightly faster 10mm and at the same time the slightly higher capacity 9mm, and that’s perfectly fine, but really the .40 is the best of both! It will kill anything the 10mm will and you can pack it around in a gun that’s the same convenient size as the 9mm, that’s a win win!

    • Robert November 24, 2014, 11:12 am

      Saying the 10mm has “slightly higher velocity” than the .40 is exactly the same thing as saying the .357 Magnum has “slightly higher velocity” than the .38 Special. It also “shoots the same bullets”.

      • Josh November 24, 2014, 7:08 pm

        Same here. If you’ve pushed the 10mm to the max on your reloads then the difference should be clear and it’s not a “slight” difference. I could argue that my .22 could take out anything your .40 can (given exaggerated, unrealistic circumstances), but I’m not hauling either in big game country. The 10mm, however, is perfectly suitable. With that being said, I own, shoot, and love both.

      • Dave December 8, 2015, 3:25 pm

        100 to 150 fps at most is the difference between a 10mm and a 40 S&W. The difference between a 38 (18,000 psi) and 357 (35,000 psi) is substantial. A little extra bit of case capacity and 2,500 psi is the only difference between the 40 and 10mm. They’re much closer in performance than the 10mm koolaid drinkers would liker to admit. Of course if you’re comparing fancy boutique ammo from Underwood that’s in the 45,000 psi range and blows up guns then the difference is a little more. I like the 10mm I own 2 of them, but the hype is beyond ridiculous. In reality it’s no more powerful than a 357 Magnum, but I’m sure plenty of 10mm fanbois are going to insist it’s equal to a 41 magnum. I’m convinced most 10mm fanbois either only own one 10mm guns or are new to shooting. That’s my only explanation for their delusions.

  • Dave November 24, 2014, 9:56 am

    Like or dislike this article, if you commented, it sparked reaction and their for was worth writing.
    If you responded saying it was a waste of time, so was your response.
    Bottom line. We all have preferences and any article that gets debate is worth writing. Just be respectful in you replied and expect the same. This is a good source of information for someone. Maybe not you this time. But their will be one soon that draws your passion.
    Lighten up, it’s information not law.
    Dave

  • Charles L Bloss Jr November 24, 2014, 8:58 am

    I carry a .45. When I retired, my sheriff’s office had just switched from a S&W 645 to a 4506. I had a new 4506 which had been to the range once ( 50 rounds ). As is customary they gave me the new 4506 upon retirement. I carry a CS45. I have a 4513TSW by my bed. The 4506 was cleaned and is in my safe. Some years later the agency changed from the 4506 to a Glock .40 caliber. They had hired a lot more female deputies, and they have difficulty handling a .45. We had some when I was working, and they shot the .45 but it was difficult for them. I do not profess to tell the Sheriff what gun to equip his deputies with. I carry and shoot what is best for me. I have heard about many one shot stops with a .45, I have heard about none for the .40 which is perhaps why they chose a pistol that carries more rounds in the magazine. My favorite semi-auto calibers are the .45 & .380. I do not like the 9mm due to over penetration issues, the .380 is about equal to a .38 special, a good law enforcement revolver round which put many a criminal in the hospital or cemetery.

    • gary November 24, 2014, 12:34 pm

      Charles- check your ejector for both wear and breakage on both of them.

  • Mike November 24, 2014, 8:18 am

    Yup – this article is a waste of time and space agreed – pass on reading this, but i guess the writer had run out of ideas on what to write and was probably facing a deadline…

    • Administrator November 24, 2014, 8:46 am

      Believe it or not, some people actually enjoy light reading and fun and thought provoking ideas. Does anyone who read this think that Dave was trying to sway people off of the .40? A lot of us like the .40 because we feel it is just that much better than a 9mm in the same sized gun, and these thoughts could be part of the discussion. Have you thought about your choice to carry a .40? Is it really better than 9mm? The caliber was invented because the FBI found the 10mm to be overpowered, but has the FBI found it to be the best caliber? It was an interesting article idea, and should provoke thoughtful discussion.

      • Josh November 24, 2014, 6:47 pm

        Well played Sir. No need to bash either the 10mm or the .40. Pros and cons for both. I like the .40 because of its convenience. I also like the 10mm because I can take it woods as well as the streets. That’s at least how I justify my purchases to the other half. 😉

      • Will Dryder November 25, 2014, 12:15 pm

        The article is so bad the Administrator has to weigh in to support it! By authors “opinions”, he should just buy a PMR 30 and rave about it being the perfect handgun and round. Higher velocity and super capacity fits his requirements perfectly. Looks like he just wants to be in support of the newest FBI caliber study but even failed to reference that. His negative reference to caliber design be committee shows his limited understanding. Only a few true wildcat cartridges have been designed by one person and most of those were based on some other persons or companies work. He is entitled to his opinions, but he needs to present and support them.

  • Bill Franz November 24, 2014, 8:17 am

    Retrofitted 9s? That’s the point of the 40. Dangerous? Oh, quit it. If that were true in today’s litigous society, it would be long gone. Limited gain? Well, OK. But I kinda like a 155 at 1200 vs. a 124 at 1200 (my loads). Limited ammo? Not where I live. Which takes us back to, “Not a 10 mm”. That’said like saying I hate. 45 Colt because it’s not a .454 Casull.

  • Mike November 24, 2014, 8:13 am

    Well – I somewhat agree I think the .40 is an in between caliber born out of the failure of the .10mm as a duty caliber for the FBI. Leary caliber to re-load sort of the bastard child of the .10mm like the 50GI is a bastard child of the 45acp, but the 50GI is a complete waste of money and time. At least you can find .40 on the shelves and it won’t break your bank.

    • ejharb December 3, 2014, 6:30 pm

      the 50gi is for people who have a lot of money and want a 50 caliber 1911 or glock. id hate to lose $.40 brass in high grass.
      as for me I enjoy and use the 45acp,its reloader friendly and has done the job for over a century. big holes bleed more.

  • Rob Taylor November 24, 2014, 7:45 am

    Wow, you really got the .40 S&W owners panties in a twist! Put me down as another .40 hater, and for much the same reasons as the author. I too detest the compromise concept of the .40, anything I want to do with a handgun can be done better by a 9mm or .45ACP. Both the 9 and the 45 are war proven combat rounds with 100 years of history to back them up. The 40 has the dubious history as being designed as a weak 10mm so that noodle armed FBI agents could handle the recoil. The 40 has benefited from groupthink, after the FBI adopted it, lots of other agencies and PD’s jumped on the bandwagon. This groupthink carried over to the public, just look at the first purchase of many new shooters, some version of the plastic fantastic in .40 cal. Heck, I have even heard the “Glock Fowty” mentioned in rap songs. Now there is a good reference! So, shoot what you like, but for me, I’ll pass on the .40 “Short and Weak”.

    • Protocol November 24, 2014, 6:46 pm

      For years the standard police cartridge in the first half of the 20th century was the .38 Special which was later replaced by most police departments and the military to the higher capacity and more powerful 9 mm.
      The 9 mm was found deficient in stopping power and to incapacitate in real life police shoot out situations and replaced with the .40 S&W. Some departments did adopt the 10 mm but it was not as good a choice as was the .40 S&W for smaller officers and woman.
      I feel it is more critical to hit what you shoot at and to be accurate than to miss your target with a more powerful handgun that is difficult to control. That is why the 10 mm is not a good choice for everyone.
      The .40 S&W as many have pointed out is easier to obtain ammo for and ammo is less expensive. I sold all my 9 mm pistols years ago opting for more powerful calibers such as .40 and .45. I doubt I will ever own or need a 10 mm no matter if its ballistics are superior to .40 S&W. The .40 S&W is more than adequate for the job.
      I also don’t take a .375 H&H Magnum rabbit shooting either.

      • Mastro May 22, 2017, 9:18 am

        A Philly cop told me years ago that the .38 Special +P with hollow points had a great record of stops. They switched over when a felon wasn’t stopped by a .38 wadcutter.

        I guess 9 mm hollow points have caught up- but I really wonder if police were under armed with the old .38

  • Mark L. November 24, 2014, 7:32 am

    40 caliber IS My Favorite round No Matter what this webtard reviewer Thinks !!! He Obviously Has weaks hands and wrists.Lol. Ive got a HK Expert 40 caliber that holds 16+1=17 and That IS Plenty power to Stop a Human threat w/ Nosler Defense 200 grain Bonded Performance Hollow Points !!! 40 caliber makes bigger holes than 9mm and if you Dont want over penetration like 9mm Does think Oscar Pistorious shooting and killing Reeva Steenkamp thru a closed wooden door w/ his trusty 9mm !!! The 40 caliber is My Go to round and 45 caliber is My 2nd favorite round due to even Bigger holes than 40 caliber !!! Lol 😉 I still to this day Dont and Will Not Ever buy a 9mm due to its over penetration and smaller bullet holes it makes !!! Love my 2 HK handguns w/ there double recoil spring buffer wich Tames Both the 40 and 45 caliber recoil Very Well ~ Peace

  • g212223 November 24, 2014, 7:26 am

    Useless gas. Talking about gun writers being full of BS….let’s argue a point and in the next paragraph refute the previous arguement. Love the 40 or hate it the article makes no valid points either way…..

  • Janus Livingston November 24, 2014, 7:03 am

    This is the worst evaluation of the 40 I have ever read-the 40 is the perfect handgun,
    Plenty of power, lots of choices in models and ammo,
    Hi cap mags, never had a glitch with my auto-get real!

  • bob November 24, 2014, 6:56 am

    .40s are a hell of a lot easier to find than 10 mm’s, especially training rounds. And I don’t think there’s any need to discuss the price difference here. My model 22 seems to be built for .40s, but I’m no expert. I am pretty sure though that it’s a bad thing to be on the receiving end of the model 22. In bear country I carry a .44…

  • brock roberts November 24, 2014, 5:24 am

    Stupid article. A zillion tests and agencies say otherwise

  • Lee Blackman November 24, 2014, 2:12 am

    I fail to see the purpose of this article. Not only does it provide no scientific or factual information, but contains false information to attempt to support a poorly justified opinion… I’m guessing this author probably didn’t cut it writing for any of the big publishers huh?

  • Mario D November 20, 2014, 11:31 pm

    Why is this even an article? I mean come on the first point is “it isn’t 10mm”. Normally when you try to shit on something you come at its specific characteristics not just bag on it cause there is something better… I mean yea the .40 cal is not the best especially if you look at other calibers but what everyone who bags on it fails to notices is IT WORKS not only does it work but it works well. I know, I have one and I’ve put close to a thousand rounds through it and I’ve never had a round just rupture in the chamber and blow my mag apart. He says “Why wouldn’t I want the 10mm? Why would I want to compromise?” It is not “compromising” if the 10mm is more expensive. The ammo is almost twice as expensive (26cents for .40 and 46cents for 10mm) so yea you get what you pay for. the 10mm hand gun on average is 100-200 more expensive so yea again you get what you pay for. just saying im tired of people shitting on the .40cal cause at the end of the day if i need it it will work and if my life is in danger it will still drop a person where they stand.

    • JerryCal November 24, 2014, 9:00 am

      Well put my friend, .40 cal will knock em down just as well as a 10mm round will. By the way its what you practice with and how accurate you are! You can have a .44 mag and miss your target or have a .22 hollow point and hit the Goliath in the forehead- which target will fall? I too am sick of the ammo caliber discussions- use what you want and what your most effective with don’t bash everybody else cause their not using what “you” like-Amen?

  • Ditto November 20, 2014, 6:32 pm

    If I’m standing 15 feet away from someone who is shooting at me, I don’t really care if they have a 9mm or a .40, or even a .22. I just want them to stop.

  • Dave the shooter November 20, 2014, 1:52 am

    If one looks for reasons to bitch, reasons can be found. But why not be happy that the very capable .40 S&W is available and another good choice for handgun defense? If 9mm, 10mm, .357 Magnum, .44 Magnum and .45 Auto ammo isn’t available, and .40 S&W ammo is, I’m not going to gripe and look for things to dislike about the .40. Besides, 10mm guns cost more, 10mm ammo costs more (if it’s available), 10mm brass isn’t as common and costs more, and the 10mm recoils more. But I’d still use 10mm if it were the only round available.

    • Michael E. Hensley November 24, 2014, 4:35 am

      From my experience this past year .45ACP is a whole lot more available than 40S&W and about the same price wise as is the 9MM. The issues mentioned above are the express ones I have with the 40. I want something that works 45 and 9

      • Larry November 24, 2014, 11:29 am

        If I could properly conceal my 45 Ruger, especially in what I wear during warmer months, that is what I would always carry. But I can’t so I have dropped down to a Beretta Storm subcompact in 40 (10 plus 1) that fits just fine in my RF pocket, whether wearing jeans, dress pants or shorts.

        I’ve fired many rounds thru this gun & no problems. It will shoot any junk 40 I put thru it. When I pull the trigger, it goes bang and recoil is not bad at all. Of course my choice of weapon might play a part in that as I do not rely on plastic, light weight stuff. In a bad situation, give me some steel any day.

    • John November 24, 2014, 6:29 am

      I don’t care what caliber it is, .22 or 50 cal. If it goes bang and stops an attacker. It is a darn good caliber!

      • Ditto November 26, 2014, 8:16 pm

        Amen, brother.

    • Dragginbutt November 24, 2014, 9:24 am

      Sorry Dave, but I think your comments really miss the important stuff. For example, First of all, handguns are only effective up to about 25 ft. Anyone who tells you different is full of crap. That puts a dangerous person/animal in very close proximity. Second, If I need to shoot someone, or something, I want to knock it off it’s feet. That alone is the number one reason I will never own, carry or shoot a 9MM. Although they may provide an eventual lethal shot, they do NOT posess the power to lift a 200 lb knife wielding criminal hell bent on killing me or my family. He will keep coming untill he bleeds out with the 9MM. And if he is able to keep his feet after being shot with a .40, he certainly isn’t going to stand up to # 2, 3 or 4. The second issue you do not talk about is penetration. Admittedly, I am not familiar with 10MM. But one point I chose the .40 over a .45 is that the .45 will exit the first body and penetrate an innocent behind them. The .40 will generally stay with the first body. That is ver important. So shell designed by committee is in this case, probably a very good thing. All those Police and law enforcement dweebs that use the .40 mush know something you don’t. When lives are on teh line, the .40 is the round to have. Lastly not sure where you live, but in my neck of the woods, .10 is impossible to find.

      • petru sova November 24, 2014, 10:21 am

        I am rather amused at some of the other pro-40 responses in regards to them believing any cartridge will knock a living thing off of its feet. Its amazing how long such myths have been around. Pure simply physics without even actual physical testing (which has been done) prove that no cartridge will knock a man or animal down because of its momentum or its diameter or its weight including the 700 Nitro express.

      • Bob Westover November 24, 2014, 10:48 am

        <>
        I totally agree, because .10 does not exist.

      • Mike November 24, 2014, 12:09 pm

        “First of all, handguns are only effective up to about 25 ft.” Not only have you shown your A**, you’ve definitely shown your lack of handgun knowledge regarding it’s abilities. I teach first time cadet shooters that will EFFECTIVELY drop you at 25 YARDS with 9, 40, or 45. Admittedly, no, 9mm is not my preference but overall, most folks have very little understanding with any caliber of handgun as to what its capabilities are. P.S. There are NO Rounds that “posess the power to lift a 200 lb knife wielding criminal”.

      • BallisticsRFantastic November 24, 2014, 12:18 pm

        @DB, Handguns are only effective up to about 25 ft???? WTH is wrong with you? Hopefully you just mistyped, but by some of your other examples, I doubt it. Although the majority of gun fights might occur within those parameters, doesn’t make it correct, as one incident that I was involved in, the round that caused the fatal would was a 9mm round and was shot from a distance of 30 YARDS. Don’t spout off ignorant non sense. Stop watching shoot ’em up Hollywood movies, not a 10mm, .45, .40, etc. will “knock someone off their feet”, 5.56 and 7.62 rounds most likely won’t knock most people on their a$$ unless its them falling to their deaths. The only way a handgun round will “lift someone” is if the victim chooses to voluntarily do it because of fear or some other factor. Anyone that uses the term “stopping power” is not a proficient shooter and knows nothing about ballistics. You’re also a moron if you believe that the only way that someone is going to die as a result of a 9mm round is to bleed out. Like I stated, I’ve seen the lights shut off of many souls by .380, .38, .32, 9mm, etc, etc. Instantaneous penetration death through hearts, heads and other vital organs. So again, stop spewing out non sense from your uneducated mouth. I’m tired of wasting my finger strength on such ignorance, but I suggest you look at some of the common defensive rounds (9mm vs. .40 vs. .45) and their FBI penetration tests on YouTube. This way you won’t generalize all calibers and their penetration prowess and demonstrate to everyone how dumb you really are. Thanks and go educate yourself.

        • Charlie November 24, 2014, 4:20 pm

          Amen brother

        • Joe McHugh November 26, 2014, 2:07 pm

          BalisticsRFantastic, very good points. As far as knock down power goes, it would take a 20 mm shell to really knock someone backwards, but we are not talking about small arms now.
          The next best effect is to hit the bad guy where the bullet will let the sand out of his legs, so that he will drop like a poleaxed steer. The heart shot is always lethal but not always instantaneous. Bad guys have taken one through the heart and then jumped into a car and drove away………about a half block.

          Aiming for the center mass is normally advised, when everything going on contributes to inaccurate shooting. The extra adrenaline pumping through your arteries will make your gun dance in your hands unless you steady them against a pole or wall.

          But suppose you make a lucky shot or are one cool customer, and your bullet severs the upper spine or penetrates the skull of your opponent. Yup, his legs will buckle and any of his muscle twitches will be inconsequential.
          A heart shot or even a lower spine shot will still leave him capable making at least one lethal return shot.

          I would suggest that even if your opponent is obviously hit, that you keep shooting while his gun hand is still moving. By the way, if a home invader selects my house he will confront my Mossberg 590A1 pump shotgun with eight
          double 00 shells in it. I also have a .45 caliber pistol but pistols are only good until you can get to a shotgun or rifle. Anything walking on two feet will lose interest in breathing when hit by 9 lead balls moving at 1,200 feet per second. At such short ranges, all of those 32 caliber lead balls are still clumped together and have the power of two .44 magnum bullets striking at the same time. Yup, wrong house.

        • dink winkerson November 26, 2014, 2:42 pm

          WOW, can’t believe how bad your a$$ was handed to you. Would like to note, your comment on the over penetration of the .45 vs .40. if you look into testing you’ll find over penetration is more likely with .40 than .45.

      • Dave December 8, 2015, 3:13 pm

        You’re not going to knock anything off it’s feet with any firearm. Your opinions and lack of knowledge are a dangerous combination.

    • Jerry November 24, 2014, 11:00 am

      Also try and hide a 10MM on your body. Also the grip is too large for some. The .40 in my hands will stop everything I need stopped. And I would rather my wife carry the stopping power of the .40 than the 9

    • Mark Freburg November 26, 2014, 9:40 am

      This was a a poorly written column. It needed to be substantially edited before it was published but wasn’t. The author has a point he desires to make but such disjointed writing only takes away from his point.

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