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Thread: Ammo for the CMP 1911

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  1. #1
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    Question Ammo for the CMP 1911

    Hello All. I am a new member. Please forgive any mistakes I make.
    I recently purchased a 1911A1 pistol from the CMP. (Yes, I was lucky.) I also own a 1911 from Kimber. Comparing the two, I immediately noticed that the CMP one had a weaker recoil spring. I have taken this gun to a gunsmith for a test fire and safety check. However I am wondering if I should be using a reduced load in the CMP pistol which is 81 years old. Does anyone have ideas on this topic? If so, what load do you use?

  2. #2
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    If you want to shoot reduced power ammunition and don't reload, I think your choice is pretty much limited to Federal Gold Medal Match https://www.midwayusa.com/product/953266229

    However, I don't know whether it's really necessary to shoot reduced power loads in that old gun.
    When you can measure what you are speaking about, and express it in numbers, you know something about it; but when you cannot measure it, when you cannot express it in numbers, your knowledge is of a meagre and unsatisfactory kind. [Lord Kelvin]

  3. #3
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    Recoil springs are cheap.
    Wolff says 16 lbs is factory.
    Colts are 15 or even a bit less.
    John Browning thought 13 3/4 was enough but that was with the early firing pin stop; I don't know if they changed the spring when they changed the stop.
    Likes (1) :
    PolyKahr (12th February 2021)


  4. #4
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    CMP checks out the weapons they sell, as I understand it. However, it was probably a good idea to take it to a gunsmith. As they say, better safe than sorry. That said, I would probably put a 15# recoil spring in and shoot range ammo like Winchester White Box. The purpose of CMP pistols and rifles is to improve marksmanship, not to pass people historical safe queens.

    Wade

  5. #5
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    Bruce, congrats on your acquisition. How about posting a couple of photos of your new pistol so the rest of us can see?

    As to recoil spring, I use 14# springs for both factory ammo and my own reduced power reloads in my Colts, Springfield Armory, and Kimber pistols.
    i sold all my handguns. . . . . . . . . . except for the 1911 style pistols in .45 ACP.

  6. #6
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    The biggest potential danger with those old military 1911s is the possibility that the slide may fracture. I would continue with a 16-pound recoil spring, and install a shock buffer.
    Hawkmoon
    On a good day, can hit the broad side of a barn ... from the inside
    Likes (1) :
    slohunter (21st February 2021)

    Last edited by Hawkmoon; 14th February 2021 at 18:24. Reason: typo


  7. #7
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    Hello MuyModesto, I'll try to upload a photo of my CMP 1911. I am actually very proud of it. My Dad carried one in WWII. Unfortunately, his disappeared.
    Sorry I guess I'm doing something wrong. The upload keeps failing.
    Likes (1) :
    MuyModesto (16th February 2021)


  8. #8
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    Quote Originally Posted by Bruce Baldwin View Post
    The upload keeps failing.
    Instructions for uploading images can be found in our FAQ section.
    When you can measure what you are speaking about, and express it in numbers, you know something about it; but when you cannot measure it, when you cannot express it in numbers, your knowledge is of a meagre and unsatisfactory kind. [Lord Kelvin]

  9. #9
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    You may have to resize your photo before it can display on this site. The limit is 1024 pixels for the larger dimension. Most cameras (and cell phones) don't have a setting for that.

    You can resize using the Paint app that's included with Windows.
    Hawkmoon
    On a good day, can hit the broad side of a barn ... from the inside

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