9MM VS 40 SW Caliber - Page 7
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Thread: 9MM VS 40 SW Caliber

  1. #61
    I tamed the .40 by getting a 23C

    I own a 23 and 23C and the difference is noticeable for getting back on target quickly. The 23C is my favorite CC pistol.
    Attached Images Attached Images 9MM VS 40 SW Caliber-1417452588148.jpg 

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  3. #62
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    Quote Originally Posted by cluznar View Post
    I sold all my 9mm's and now use a Bersa Thunder .32 acp and a Kel Tec P-32 for carry and home. I can shoot them accurately and follow up shots are easy. I know, you guys have the big knock down power, but a double tap of .32 acp in the chest will stop someone.
    .......and its the only caliber Conrad is allowed to have!

  4. #63
    The smaller you go in caliber the more hits you will need to stop a threat.
    This holds true for police as well as home defense shootings.
    “An armed society is a polite society.”

  5. #64
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    Well, better late than never; so, even though it's December, I'm going to reply! This is an interesting question! One that I’ve often thought about, and researched on several different occasions. I’ve been handling all different sorts of firearms for more than 60 years. (Yes, I’m an older gunman.)

    Over the past decade my usual EDC pistols have been either a Glock Model 21, or a Glock Model 19. Long experience with handguns has taught me that the ignition and firing characteristics of 45 ACP, or 9 x19mm cartridges are equally controllable; however, the ignition and firing characteristics of 40 S&W cartridges are different, and more difficult to control - Especially during rapid-fire events.

    The particular problem with Glock pistols - and their well documented tendency to explode in 40 caliber - is that, first and foremost, the Glock polymer frame platform was originally designed to function (more or less perfectly) with 9 x 19mm ammunition. Every other cartridge chambering that Glocks are currently manufactured in, today, is an offshoot and adjunct of the original 9 x 19mm design.

    The firearm marketplace (and the world) has changed a very great deal since I, first, started shooting all the way back in the early 1950’s. Today, everybody’s plastic pistols are markedly different from the precisely built, tightly fitted, smooth cycling, steel (and alloy) pistols that I spent most of my life with up to, and until, about 1988. (When Glocks really began to take over.)

    Quite frankly, up until the early 90’s I never thought I’d see an American pistolero laud any firearm with anything less than a superlative trigger; BUT, times have changed; and, today, all different sorts of pistols with genuinely crappy triggers - like you’d never find in an old blue-steel Smith & Wesson - are the norm rather than the exception. (Go figure!)

    Differences in slide cycling, barrel locking and unlocking, frame-to-slide fit, and newly introduced polymer-frame vibration are much more significant - and of potentially greater consequence - on today’s plastic pistols than such considerations ever were, before, on the older all metal designs.

    Not having spent the last two decades on a desert island I am aware that popular opinion on Glock (and other) plastic-frame pistols is such that it’s, ‘internet gun forum sacrilege’ for anyone to assert that Glocks (and other plastic-frame pistols) are anything less than perfect; and I’m willing to acknowledge that Glocks do and have produced absolutely fantastic fired round counts - Counts that were previously unattainable!

    Intrinsic accuracy issues aside, any plastic pistol’s extended duty cycle should be weighted against its equal characteristic of being inherently less safe than any of the historical well recognized steel-frame pistols. If anything is off on a more susceptible, more prone to catastrophic failure, plastic-frame pistol: If the frame vibrates too much, if the barrel doesn’t lock or unlock quite as it should, if certain types of (otherwise) conventional ammunition don’t perform consistently as well as they should, then the pistol’s, ‘kaBOOM!’ factor goes, disproportionately, way up!

    (The word, ‘kaBOOM!’, novel as it is, was invented and added to the American firearms lexicon solely because of Glock pistols’ spotty performance record.)

    Yesterday’s pistoleros required impeccable accuracy along with flawless mechanical performance at absolutely minimal personal risk; and, while it might appear that nothing has changed, in fact, everything has! Today’s gunmen fire more shots, less precisely, and less reliably than at any other time I’m able to remember.

    The pistoleros of my youth were marksmen; the pistoleros of my old age are combat gunmen. We used to strive to shoot out silver dollar-sized holes in our targets; but, nowadays, a pockmarked 7 inch circle more than suffices. (Hey, I do it too - OK!)

    When you consider the reduced safety factor of plastic-frame pistols and, then, add in the ignition and pressure characteristics of 10mm (including 40 S&W) ammunition, what the typical G-22/G-23 pistol shooter is holding in his hand is a less safe, more difficult to control, BUT otherwise generally reliable handgun.

    Different plastic pistols kaBOOM! for different reasons. Attributing just one cause to just one Glock model can become very confusing; e.g., 40 caliber Glocks have exploded because of such reasons as: excessive peak ignition pressure caused by certain gun powders, excessive firing chamber rebates, excessive frame vibration, and impingement between lock block fingers, and the bottom of the slide. Early 45 ACP Glocks used to go, ‘kaBOOM!’ because the trigger bars were improperly constructed, chamber rebates were excessive, and properly synchronized slide cycling could become sporadically impeded.

    (On my G-21’s, the slides would occasionally fail to close; and, as many of us already know, the Glock design is capable of firing a round while the slide to barrel lockup is still as much as 3/32” open!)

    There’s another kind of danger that many Glock owners have had to face: The danger of having their Glocks not work properly when they need them to! Historically, at different times and for different reasons, I’m able to remember Glock Model: 22’s, 23’s, 21’s, 36’s, and 30’s that have all demonstrated both failure-to-fire, and failure-to-feed hang-ups - Some of which led, or could lead, to kaBOOM! events.

    None of these criticisms are meant to say that you shouldn’t buy anybody’s plastic-frame pistol. I, myself, carry a 12 year old, 3rd generation, Glock Model 21 (That’s had a good 40,000 rounds fired through it!) around with me every single day! The proviso (the caveat) is that I’ve lived through so many, ‘Glock problems’ over the past 12 years that I have been, more or less, forced to become a savvy and highly skilled - but, still, not factory certified - Glock armorer. (No big deal, I was already a half-decent gunsmith to begin with.)

    Consequently, with the exception of a (somewhat) marginally-performing Glock Model 19(RTF2) with which I’m still having minor BTF problems, all of my Glocks work very well. If I had to decide which Glock to buy, today, I’m 100% certain that it would be one of the 9 x 19mm pistols - Probably another G-19, a G-34, or (maybe) a G-17. You might ask, 'Why' no 45 ACP? Because I've already got two of them - No other reason!

    Here I should, perhaps, confess that, whenever possible, I avoid using 40 and 10 millimeter pistols. I can (and have) shot them well; but they slow me down; and I find all 10mm’s (long and short) to be considerably more difficult to control well AT SPEED! I’ve always been more accurate, and faster with either a 9mm, or a 45 ACP pistol - especially during rapid-fire events where quick and easy front sight recapture made a big difference.

  6. #65
    Also the smaller the caliber , the easier it is to make quick and accurate multiple shots. So the whole caliber issue is really a mass of catch 22 issues. No wonder we all have such a variety of opinions.

    As i have this wonderful master plan to never use my guns to shoot anyone (wish me luck with that) i in part pick guns that for me, are fun to shoot and challenging. For me in the Glock calibers, those are 10mm, .40S&W, and .357SIG. 9 is just a bore (pun intended) to shoot in comparison.

  7. #66
    Quote Originally Posted by Stan45 View Post
    The smaller you go in caliber the more hits you will need to stop a threat.
    This holds true for police as well as home defense shootings.
    Handgun are not man stoppers (aside from a few true hand cannons that are impractical carry's). Rifles and shotguns can be man stoppers.

    Many people have received non-survivable wounds, yet continue to fight for several minutes.
    “Religion is an insult to human dignity. Without it you would have good people doing good things and evil people doing evil things.
    But for good people to do evil things, that takes religion.” ― Steven Weinberg

  8. #67
    Join Date
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    I understand we have new people from time to time and they are curious but I swear if I see one more 9mm vers ? post I'm going to start a riot.
    Suppose you were an idiot, and suppose you were a member of Congress;
    but I repeat myself.
    Mark Twain

  9. #68
    Join Date
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    For personal defense (the only place where a strong case can be made for the .40): The differences in terminal performance on humans between a 9mm, .40, and even .45 are pretty marginal. You will be able to shoot the 9mm faster, and perhaps more accurately, than the .40. If you buy the current view that handgun bullets just poke holes, is an extra .04" of hole width worth the tradeoff of fewer holes in total (due to both capacity and rapidity of fire)? Modern 9mm SD/service ammo meets FBI standards and is plenty potent. If you don't agree, the answer is to move off the service-caliber power band entirely and go to a 10mm or magnum revolver cartridges or the like.

    Hunting: Neither round is a good choice for hunting, so no points for either.

    Practice: Strong win for the 9mm here, from both cost of ammo and for development of a flinch-free shooting form.

    Gun games: 9mm is the better cartridge for IDPA; .40 gets to major in USPSA.

    Safety: The 9mm, and guns chambered in it, are very "safe," insofar as a cartridge can be safe. The .40 (although pretty safe when you consider the vast number of rounds of it fired every year) has some issues. Bullet setback quickly leads to a compressed, over-pressured load in a .40, which can result in case rupture and ka-booms.
    In an emergency individuals do not rise to the occasion, they fall to the level of their MASTERED training
    Barrett Tillman

  10. ^^^What he said.^^^
    I'm a firm believer in two term limits for all politicians; one in office, the other in prison.

  11. #70
    Both 9 and 40 are in my carry rotation, and I'm pretty damn sure any bad guy would choose to be shot with neither of them.
    “Religion is an insult to human dignity. Without it you would have good people doing good things and evil people doing evil things.
    But for good people to do evil things, that takes religion.” ― Steven Weinberg

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