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Thread: 9MM vs .40 Cal

  1. #26
    ooakpro is offline Junior Member
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    Glock model 23 .40 caliber.....awesome gun, shoot one a few tmes, all the 9's feel like pellet guns after.........of corse, this is my opinion!

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  3. #27
    Cat's Avatar
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    Ya a .40 had a lot more power to it. Like I was telling them. Officers use a .40 y. Like your g23 and my g27 and g22. Note My g27 holds 9+1,My g22 15+1. Offices use the g22 for just that. More power and still have a mag with a lot ammunition in the mag. And your g23 I think I'm right 13+1. But the 9mm is still a power house pistol. But with all the testing 9mm come a little off of the power in to days world. Back in wwII they show are man shooting people with 9mm,And they would get back up and kill are boys. Japan and German had .45cal Or the 13mm.

  4. #28
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    You guys got me thinking so much in this lol, I read a lot and do a lot with my RO at the range.( RO is Range Officer ) So I was looking on some place I was reading up on this.( The why and why not ) My be this can help. FBI Site.
    FBI Handgun Wounding Factors and Effectiveness - FirearmsTactical.com

  5. #29
    jakeleinen1 is offline Member
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    9mm to the head, the bastard is dead -thats my motto

    I can definitely see where a .40 will outgun a 9, like if say you were shooting at vehicles, but even in this case, careful placed shots outweigh any "power" you get from a 9 to a 40 IMO

  6. #30
    ozzy's Avatar
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    Quote Originally Posted by jakeleinen1 View Post
    9mm to the head, the bastard is dead -thats my motto

    I can definitely see where a .40 will outgun a 9, like if say you were shooting at vehicles, but even in this case, careful placed shots outweigh any "power" you get from a 9 to a 40 IMO
    I like my carefully placed with a .40 myself. Hydrostatic shock doesn't hurt either.

  7. #31
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    dondavis3 is offline Senior Member
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    The caliber wars will go on for ever ... some like .45 acp .. some .40 cal .. some 9mm.

    I personally shoot the 9mm because of cost.

    I like shooting the .45 acp the most.

    If you shoot a lot (I do)

    Then the difference in ammo cost in 1 year between the 9 mm and a .40 or a .45

    Will save you enough to buy yourself another gun.

    The last 2 .40 cal's I bought, I bought a Bar-Sto 9mm conversion barrel for and mainly shoot 9mm in them.


  8. #32
    jakeleinen1 is offline Member
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    Quote Originally Posted by ozzy View Post
    I like my carefully placed with a .40 myself. Hydrostatic shock doesn't hurt either.
    Ive seen ppl who can shoot .40 extremely well, but if you shoot .40 extremely well, I would guess you shoot 9mm perfect. If a hypothetical situation escalated to where I had to draw a pistol on a very specific spot (like movie scenario where bad guy takes human shield and bad guy's head popping out) if I had a .40 or a 9mm, I would choose the 9 to take the shot if i had to... (obviously its a ridiculously hypothetical and silly scenario seeing as 99.9% of the time you should never take the shot) BUT Would you take the shot with the .40 over the 9mm if you had to? I would hesitate, but not with a .45 or a 9mm

  9. #33
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    recoilguy is offline Senior Member
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    I would only shoot what I have practiced with. If I practiced with a .40 I would shot a .40. Caliber is not in direct corrilation to ones ability to control a handgun, I don't think anyway.

    The logic in the if you shot a .40 Extremely well you would shoot a 9mm perfect is .......I don't know the word......goofy works.

    There are so many factors to consider other then just caliber. I put very little credence in movie or TV senerios. If so I saw a guy on Criminal Minds, The middle aged guy who is the boss, shoot a BG off the top of a moving train while in a car driving on railroad tracks sticking his head out the window, with a Glock 17 (I assumed) from about 50 feet. What gun would you use to make that shot? I don't know which one I would use. But at least he used a 9mm.

    RCG

  10. #34
    rauchman is offline Junior Member
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    Quote Originally Posted by PhilR. View Post
    I would agree w/the above -- 9mm will do just fine. The 9mm is about the cheapest centerfire cartridge you can find, which will allow you to shoot more often and therefore allow you to better your skills. I've paid as little as $4.97 a box for CCI Blazer. There are also a great number of excellent cartridges made for self-defense, so you will not be under-gunned when it comes to self-protection. Most 9mm variants can also be found in .40, but there are a few models that will come only in 9 and not in 40.

    At any rate, you won't go wrong with either caliber, as long as you buy a decent pistol....

    PhilR.
    Wow, remember when a box of 50 9mm Blazer rounds was $4.99. It doesn't seem all that long ago.

    Anyway, in answer to the 9mm / .40 question. I've found myself now going 3x back to .40 to try to master it and shoot it as well as a 9mm or even a .45, and it just doesn't happen. Rather, single shot accuracy is fine, but it's the 2nd shot that takes a bit to get downrange accurately.

    Having said that, some of the newer .40 offerings are better than they were when the .40 first became popular. I have a Gen4 G23 and M&P40F and both seem to handle (better 2nd shot recovery)the .40 better than previous Glocks and other, older offerings. I find myself sometimes practicing w/ .40 FMJ to be more competent w/ 9mm HP.

    I still like .45 the best though.

    As for perceived bullet performance...

    Yes, I do believe a modern 9mm HP offers enough terminal performance to be competitive w/ the .40/.45 offerings. However, if you're not using the latest/greatest 9mm HP rounds, my warm and fuzzy feeling on the 9mm seems to diminish a bit, especially w/ FMJ. You always see .40 available at WalMart and where ever, while 9mm and especially .45 can be hit or miss. My 1st pick in an FMJ would be the .40 due to the flat point.

  11. #35
    mdschell is offline Junior Member
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    I have always been taught that the .40 was superior to the 9mm as a personal protection weapon, but recently read this very interesting artical to the contrary.

    Being Wrong is Important... and, Admitting It is too! Or: Why Rob Pincus now prefers the 9mm over .40 S&W for Personal Defense.



    Being Wrong is Important... and, Admitting It is too!

  12. #36
    Russ is offline Banned
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    124 gr Gold Dot hollow +p short barrel 9 mm is all the fire power you will need. Look up the ballistic. 13 inches of penetration nearly twice the diameter with almost zero loss of bullet mass. Seriously what more do you need ? Those results will stop anyone. I would focus on shot placement and 9 mm will not be as punishing when it comes to recoil on a pocket gun. 9 mm delivers and a lot cheaper than a 40 cal.

  13. #37
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    For a first handgun, a 9 mm is a better choice. Easier to shoot well and cheaper to keep. I'd strongly recommend you consider pistols that have a .22 adapter kit available (CZ 75 being one example among many). Even more shooting for even less money.

  14. #38
    Packard is offline Senior Member
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    If 9mm was all the gun you need, and considering that 9mm ammo is cheaper and you carry more rounds of 9mm than you would of .40 or .357 Sig, then why have the FBI and police departments all over the country been flocking away from 9mm and to the more robust calibers?

    The answer is, I will suggest, that 9mm is not all the gun you need; in fact is is not nearly all the gun you need. You want to believe that it is because the ammo is cheaper and the guns are smaller, and the recoil is lighter. But wanting to believe something is true is not the same as it being true.

  15. #39
    rwspear76 is offline Junior Member
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    ammo on the web

    Quote Originally Posted by stevexd9 View Post
    Thanks for the info I am ordering as I type
    I was interested because I had not heard of that site, and looked at it. I compared them, ammunitiontogo.com, and cheaperthan dirt.com, and cheaperthandirt.com is on average a dollar per box cheaper for ammo......just sayin

  16. #40
    rwspear76 is offline Junior Member
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    A guy can get by with a 9mm, a .22 would even do the job. The .22 is used in a lot of butcher shops to take down cattle, its all in round placement. HOWEVER, for home and personal defense, I prefer my .40 s&w.

  17. #41
    rwspear76 is offline Junior Member
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    Quote Originally Posted by Packard View Post
    If 9mm was all the gun you need, and considering that 9mm ammo is cheaper and you carry more rounds of 9mm than you would of .40 or .357 Sig, then why have the FBI and police departments all over the country been flocking away from 9mm and to the more robust calibers?

    The answer is, I will suggest, that 9mm is not all the gun you need; in fact is is not nearly all the gun you need. You want to believe that it is because the ammo is cheaper and the guns are smaller, and the recoil is lighter. But wanting to believe something is true is not the same as it being true.
    The .357 SIG is based on a .40 S&W case necked down to accept 0.355-inch (9.0 mm) bullets, the .357 SIG brass is slightly longer (0.009-inch (0.23 mm) to 0.020-inch (0.51 mm)). The cartridge is used by a number of law enforcement agencies and has a good reputation for both accuracy and stopping power. But none the less it is still a 9mm, just like a .22-250 is still a .22, but that extra velocity sure does help.

  18. #42
    Packard is offline Senior Member
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    Quote Originally Posted by rwspear76 View Post
    The .357 SIG is based on a .40 S&W case necked down to accept 0.355-inch (9.0 mm) bullets, the .357 SIG brass is slightly longer (0.009-inch (0.23 mm) to 0.020-inch (0.51 mm)). The cartridge is used by a number of law enforcement agencies and has a good reputation for both accuracy and stopping power. But none the less it is still a 9mm, just like a .22-250 is still a .22, but that extra velocity sure does help.
    I believe that I've read that necked down cartridges feed very reliably--more so than conventional cartridges. And that might be part of the decision making. But why would the necked down cartridges feed more reliably?

  19. #43
    rwspear76 is offline Junior Member
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    I really don't know, but it seems to me it was done simply to get more power behind a smaller load, for a faster, more accurate bullet.

  20. #44
    Packard is offline Senior Member
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    Quote Originally Posted by rwspear76 View Post
    I really don't know, but it seems to me it was done simply to get more power behind a smaller load, for a faster, more accurate bullet.
    Yes, I understand why they did it. But a by-product of that necking-down was improved feed reliability. I just don't understand why the necked-down rounds should feed more reliably. Maybe one of the other members here can explain.

  21. #45
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    Quote Originally Posted by pintail1069 View Post
    I will soon be buying my first handgun, and I don't know which to buy. I have been told good reasons for each from various people. I would appreciate hearing the opinions of other members of this forum.
    Each caliber has its strong and weak points. The .40 has no real "weak" points in the power factor department, but it is more expensive and some people have a little harder time getting follow-up shots to hit the target as quickly as they could with a 9mm. The .40 carries with it more muzzle energy than the 9mm does, that I think we can all agree on, but the right 9mm is no slouch. The 9mm has been around a hundred years or so, and it has made a lot of poor souls occupy the great beyond. I feel that your question can only be answered by you yourself. Get your hands on a few different examples of each caliber and shoot them both. Some handguns are designed differently than others, and a .40 or 9mm will shoot differently in these guns. Do your homework before you go out and drop five to six hundred dollars on a gun you are not really happy with. JMHO.

  22. #46
    Packard is offline Senior Member
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    I'm an old timer. When I started shooting expanding bullets was a brand new concept. So a big round like a .45 was a man stopper, and a military ball 9mm fared poorly. I am slow to change. So I tend to dismiss 9mm rounds as inadequate, even though the modern bullet designs have gone a long way to minimizing the differences between a higher speed 9mm and a slow, lumbering .45. So I like big bullets. I like proven bullets (like a .357).

    Also there are a lot of military people out there and they like the .45 because they are not permitted to use expanding bullets. A 9mm ball bullet, I think most people will agree, is not a proven man-stopper (though it kills pretty well). A .45 in military ball is still an effective round.

    I think that you will find that guys that have been shooting a long time gravitate to .45s and .357s and other major calibers. And those that are up on the latest and most effective bullet designs are happier with 9mm rounds and .380s.

    So first you have to pick the demographic for your advisor, then listen to the advice.

  23. #47
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    Quote Originally Posted by Cat View Post
    Go back to WWII are boy had 9mm. And the 9 was getting are man killed.Thick and heavy clothing No power in them, That is where colt came out with the .45. Police Officers drop 9mm for .40cal .. Note 9mm is a 38'special. In to day world, Most have .40 or 10mm and 45cal. For a power house pistol.
    Huh?

    Our boys in the military have been using the .45 ACP since before WWI, and continued to use it throughout WWII, Korea, and Viet Nam.

    It was replaced by the 9mm, which has probably taken more lives than any other pistol round, if you count all the executions by the Nazis and tin-pot dictators. As for the police leaving it in favor of .40's, that was a backlash caused by it's failure in the big Florida shootout, in the 80's, and its deficiencies from that era have since been corrected by improved bullet design that makes 9mm self defense ammo compare very favorably to the .40 S&W.

  24. #48
    swampcrawler is offline Junior Member
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    9mm. not because its my favorite round, but because its easy to afford to shoot it a ton. I think there is no substitute knowing you weapon, and the only way to do that is to shoot it. id rather be up against someone with a .50 cal desert eagle that has only shot it twenty times than someone whith a .22 revolver who has shot it thousands and thousands of times.

    but i think i'll stick with my HK45.

  25. #49
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    The 40;45; and 9mm are all great catridges. Look at their popularity, with 9mm being the most popular in the US and worldwide. The 40 is a heavier more powerful round and leaves bigger holes. Many police agencies are going to 45's over 40's for the penetration through auto glass and auto bodies, however slight. Neither the 40 or 45 beat out the 9mm 147's by much in this category. As far as what I've read the agencies who have adopted the new 147's have had very positve results in the one shot stop category as well as the venerable 124+P Goldots. I've shot Golddots for many years and I truly believe I sure the hell wouldn't want to be shot by one. Law enforcement has a very high priority concerning shooting into cars, not so much as for the average joe and the need for self defense against human targets w/o having to go through cars. All things being equal 9mm has less recoil, holds more bb's and practically does as well as either 40 or 45 even through cars. I likewise believe the 9mm to be more reliable in semi-autos due to it's size and shape, the 9mm is at home in full size service weapons to pocket pistols and cost's less. In all the ammo testing videos and articles I've read coupled with the 9mm's popularity and track record and for what I need it for the 9 will do just fine new or old shooter alike, however, I do like the 40 and 45 as well. Just my 2 cents, just shoot what you like, it's your choice.

  26. #50
    imaredhead946 is offline Junior Member
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    Cool 40 Caliber Glock

    Quote Originally Posted by stevexd9 View Post
    I would agree with mike. I am a new shooter and I started off with a 9mm. I bought a .45 and love it, but I was recently shooting a .40 and the recoil was very pronounced more so than the .45 and it just fun for me to shoot.
    I used to practice with a 40 caliber Glock and the recoil took a little getting used to.... ok, a LOT of getting used to but I finally got to where I could hit the target fairly well but not as well as with a 38 or my 22 rifle (and a very old 22 military issued pistol). I had wondered about a 9 mm and someone said here the recoil isn't as bad as the 40 caliber so I may have to rent a 9mm so I can decide which handgun to purchase for protection. I definitely want one with a clip/magazine to hold lots of ammo and I need to be sure I'm able to handle it well and with ease since I've been away from shooting for about 6 years. I will also have to get passed the initial flinching too. I love shooting but hate the noise. Go figure! LOL! I used to shoot my brother's 12 guage shotgun and even though I held it securely in place, my arm would ache for days but back then I only weighed just over 100 pounds so it's a wonder it didn't knock me off my feet but that isn't problem these days. LOL! Well thanks to all who've contributed information. I look forward to being a part of this handgun forum especially once I get back up and start target practicing again. My eyes aren't so good but before I had to wear glasses, I was an excellent shot! I could outshoot all my brothers and both my husbands and boyfriends that came along after my divorce! I hope to get there again and hope to get proper training so I don't panic in a tough situation. My daddy, who started teaching me about guns at the age of 12, told me never shoot someone unless you intend to kill them so I hope I never have to defend myself with a gun or I will have to take my dad's advice.

    Have a nice day and thanks for all the gun info!

    Ima

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