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Thread: .40 vs .45

  1. #1
    oldtimer is offline Junior Member
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    .40 vs .45

    I already have a .357 and a 9mm . What's the difference between the .40 and the .45 in a semi-auto ? Looking to add another caliber for now and possibly the other caliber at a later date . Thanks

  2. #2
    Steve M1911A1's Avatar
    Steve M1911A1 is online now Senior Member
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    I am tempted to answer, "the difference is 0.05 inch." But I won't, because that would make me sound like a wise guy.

    The .45 ACP is old-fashion, and delivers a relatively heavy, relatively slow-moving bullet. That's not a bad thing. It's just a statement of fact.
    The .40 is much newer, and it delivers bullets which, although generally lighter, move somewhat faster.

    I like the .45 ACP, and have used a gun in that caliber for most of my pistol-shooting life.
    I have never owned a .40, but the FBI thinks that it's the bee's knees.

  3. #3
    TAPnRACK's Avatar
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    Re: .40 vs .45

    Really depends on what your firing out of... a polymer or metal frame handgun.

    A poly .40 (lets say Glock) will be "snappy" comared to an all metal .45 (lets say Kimber).

    I currently carry a Dept issued .40 Glock and feel it had more jump & recoil than my previous Dept's Sig Sauer .45acp.

    This is my opinion based on my experience with them... all my personal handguns are .380 & 9mm. If I had a choice I would go .45 in a metal frame model.

  4. #4
    berettabone is offline Banned
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    For some of us, .40 is the bee's knees.........
    Quote Originally Posted by Steve M1911A1 View Post
    I am tempted to answer, "the difference is 0.05 inch." But I won't, because that would make me sound like a wise guy.

    The .45 ACP is old-fashion, and delivers a relatively heavy, relatively slow-moving bullet. That's not a bad thing. It's just a statement of fact.
    The .40 is much newer, and it delivers bullets which, although generally lighter, move somewhat faster.

    I like the .45 ACP, and have used a gun in that caliber for most of my pistol-shooting life.
    I have never owned a .40, but the FBI thinks that it's the bee's knees.

  5. #5
    Popeye7751's Avatar
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    .40 is the mall ninja,whiz bang and yuppie round
    .45 is the back alley brawler, "git er done" type of round. USMC is going back to them.


  6. #6
    oldtimer is offline Junior Member
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    Thanks for the replies...pretty much what I was looking for . I really do want one of each so I guess I'll go with the cheapest ( less expensive ) of the two and save up for the other while I get some up-close time with the first...thanks again .

  7. #7
    SouthernBoy's Avatar
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    Both are excellent choices for self defense calibers and you would do well to choose either. My personal preference is the .40S&W but I also own a few guns chambered for the venerable .45ACP, one of which I have carried. Best thing to do is to try candidate guns in both calibers to see which works best for you. Even though the .45ACP is over 100 years old, it is still considered one of the best SD calibers you can carry. On the .40S&W side, a well-known gun writer stated in one of his books that the Glock 23 is the finest combat handgun you can carry. While he tends to be quite opinionated, he gives and has his reasons for making this statement.

  8. #8
    berettabone is offline Banned
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    Hope you never have the experience of being shot by either.....
    Quote Originally Posted by Popeye7751 View Post
    .40 is the mall ninja,whiz bang and yuppie round
    .45 is the back alley brawler, "git er done" type of round. USMC is going back to them.


  9. #9
    shaolin's Avatar
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    With people buying up all the ammo I would buy the one I could find ammo for. Both will serve you well in terms of stopping power.

  10. #10
    rex
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    Performance wise there isn't much difference at all.I prefer the 45,I find it nicer to shoot at high speed and it's an old popular round.Not so much a NATO round anymore but falls into that kind of classification-9,5.56,7.62x39,7.62x54(?) and 45acp will always be around to be had one way or another.

  11. #11
    paratrooper is online now Senior Member
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    No real benefit of one over the other, other than personal preference.

    That being the case, I have two .40's and four .45's.

  12. #12
    TheLAGuy is offline Banned
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    Im thinking of a .40 cal due to cost of ammo. Unless your really into the .45 and/or a rich man, I think .40 is the way to go, and the way of the future. Just my 2 cents.

    I'm either getting a Sig or a Glock in .40 cal in case you guys were wondering!

  13. #13
    Popeye7751's Avatar
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    Quote Originally Posted by berettabone View Post
    Hope you never have the experience of being shot by either.....
    Me too!!!
    They both have their place I just didn't care for the .40.. But the argument will go on forever.

  14. #14
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    At pistol ranges, both do about the same thing to the target. I like my SR40 better than the Colt 1911 I shot in the service. My Ruger is a double stack with 15 rounds. The 1911 had 7, It may be more the Ruger than the round. But the SR40 stays on target better than the 1911 did.

  15. #15
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    XD40 4" = 12+1

    That is a lot of knock down power.

  16. #16
    TheLAGuy is offline Banned
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    Quote Originally Posted by XD40inAVL View Post
    XD40 4" = 12+1

    That is a lot of knock down power.
    That's what I'm thinking for my next purchase!

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    .40 vs .45

    Quote Originally Posted by paratrooper View Post
    No real benefit of one over the other, other than personal preference.

    That being the case, I have two .40's and four .45's.
    Agreed. I have one .40 and two .45's - love all three.

  18. #18
    SouthernBoy's Avatar
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    Quote Originally Posted by XD40inAVL View Post
    XD40 4" = 12+1

    That is a lot of knock down power.
    A handgun bullet ain't gonna knock anyone down.

  19. #19
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    Strictly preference, for an experienced shooter.

    I personally prefer the .45, because I prefer the more gentle recoil, but I have one .40 and it is a good shooter, too, and still quite manageable.

  20. #20
    rex
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    Quote Originally Posted by XD40inAVL View Post
    XD40 4" = 12+1

    That is a lot of knock down power.
    My 5"USP is 12+1 too,but barely moves.Accurate and fast followup shots are what count,if you can't pull off 3 shots a second 7yds out you're too slow.Handguns are your worst choice of firearm but they're better than a knife or club,you have to drill them until they break down because one shot stops are rare on real criminals.

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