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How much of a difference in Velocity between a full size 1911

Discussion in 'Caliber Corner' started by RMTactical, Aug 25, 2012.


  1. RMTactical

    RMTactical
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    www.AR15pro.net
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    and a Glock 30? Anyone know? I believe the G30 has a 3.78" barrel and the full size 1911, 5".
     
  2. dudel

    dudel
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    IIRC, each inch of barrel translates to about 50 fps. There is of course a point of diminishing returns. Handloader magazine did a story on barrel length and ACP velocity last year. Interesting story.

    However you are also switching between standard and polygonal rifling, so I'm not sure this holds.
     

  3. fredj338

    fredj338
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    The 45acp gives up less vel / inch than other calibers, maybe 30fps on avg. The GLock doesn't add all that much either, maybe 25-30fps max. Only way to know for sure is run your ammo over a chrono. All guns are diff, 25-30fps is within the variation from like gun to like gun IME.
     
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