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45acp headspacing

  1. 45 ACP 1911 not what it appears?

    Handgun Cartridges
    Here I thought I knew a few items about the 45 ACP cartridge. I was under the impression that this case in the Colt 1911 style pistol's headspaced off the case mouth. I had an individual who I respect on information about guns tell me that the bolt face and extractor determind the headspace for...
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