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.40cal in a 1911 pistol???

Discussion in 'The 1911 Forum' started by chocoboy, Dec 11, 2003.

  1. Miyagi

    Miyagi New Member

    Joined:
    Oct 22, 2003
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    Location:
    Crestwood, Ky near Louisville, KY
    Recoil Spring

    I plan on fitting a 40S&W barrel to my 10mm Kimber. It currently uses a 18# recoil spring. What rate recoil spring would I need for the 40S&W, lead and jacketed???
  2. Shooter45

    Shooter45 *Administrator* Staff Member

    Joined:
    Feb 9, 2001
    Messages:
    9,902
    Factory loads will require a 16# to 18# spring. Wolfe Varible Rate springs would work well.
  3. plunker

    plunker New Member

    Joined:
    Sep 12, 2003
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    Location:
    New Mexico
    I believe the reason most 1911's are produced in .45 is that it is a traditional cal. in a traditional pistol. Beretta sales pistols in .45, .40 but I bet most of their sales is in 9mm.

    I feel after shooting both the 40 and the 45 that the 40 is a flatter shooting round than the .45. This to me makes since since the 45 is bigger and heaver it will lose power and speed before the 40 or the 9mm.

    The question is how far out does the round become less effective. At 25 yards you are still hitting close to your poa with good groups. If I have to shoot further than that I can probably get away from them on foot.:D

    I have never shot further than that distance to know the drop in my shots.

    plunker
  4. Artillery Mech

    Artillery Mech New Member

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    Pac North-west
    I could be wrong, but I look at the debate this way; If the 9mm or 40 cal goes through the target, then how much of their energy gets dumped into the target? Both tend to go through their targets, but the 45 tends to remain. Therefore, the .45 ACP and LC dump 100% of their energy into their target. The .45 is aprox 11.45mm compaired to the 9mm's... well... 9mm. :D Bigger holes make more blood flow! In Somolia, the 9mm drilled holes through the Skinnies. The .45 broke bones and planted them.


    Just a thought... Did yall know the military is going back to the .45? The Special Forces and the Marines are back to the 1911 or another pistol for the .45.
  5. bompa

    bompa New Member

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    May 25, 2001
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    Western Mass.
    Some ones sig line on another forum says it all..

    The forty is for the person that is ashamed to carry a nine and can't handle a forty five...
  6. 300mag

    300mag New Member

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    Jan 9, 2004
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    Location:
    AZ
    As far as I'm concerned, there's not a darn thing wrong with a .40 caliber 1911. I own an STI Trojan in .40 and it's amazingly accurate and reliable.

    However, If I had to choose between a .40 and a .45 for a self-defense weapon, I'd take the .45 without a doubt. The .40 may shoot flatter over long distances (maybe), but long range accuracy usually doesn't matter when it's a life-or-death situation.
  7. Miyagi

    Miyagi New Member

    Joined:
    Oct 22, 2003
    Messages:
    2
    Location:
    Crestwood, Ky near Louisville, KY
    I have a Kimber 1911 in 10mm which is a higher pressure round than the 45ACP and 40S7W. Matter of fact I just fitted a Barstoe 40S&W barrel to it and have shot a couple of dozen each of jacketed and lead bullets. It's comfortable and accurate. Went to 40 to shoot lead loads, hard to download 10mm below 1000 fps, and brass is cheaper.
    Got the Kimber over a Dan Wesson because the barrel is fully supported in their high pressure calibers.
    I also have a Para Ordnace in 45ACP and like it also.
    My son has a Kimber in 38 super and it's very accurate and comfortable to shoot also.
    That's what's so good about the 1911, it's versatile and comfortable to shoot and easy to point.
  8. Smokin Guns

    Smokin Guns New Member

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    "Gun Culture Members Clubhouse"...
    Hi Miyagi! I'd say to the other folk "on the fence" try 'em all...then sort them out...;)
  9. Woodman

    Woodman New Member

    Joined:
    Jan 11, 2004
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    Location:
    Da' Keystone State
    back to the original pressure question...
    my colt double Eagle 40 was a 1911 frame, and built like a brick outhouse. I've read 40 pressure can get up to 40,000 psi, but most saw it is in the 32K range.

    The same gun was used to make a 45, a 9mm, a 38 super, and a 10mm.

    I'd LOVE to have a Double Eagle in 10mm in the Commander size, or even better, the Officer's, but I doubt it was made that small.
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