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M-1 Carbine, why not .45 Caliber?

Discussion in 'Caliber Corner' started by PurpleAngel, Sep 1, 2012.

  1. PurpleAngel

    PurpleAngel

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    When the U.S. Military (1940?) came up with the M-1 Carbine for non-front line troops, why could they have not just have used the .45 round instead of the .30 carbine round?
     
  2. banger

    banger

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    First, allow me to confess....

    I am pulling this from my butt....

    However, I seem to recall that the original spec. called for an effective range of 200 yards.

    This alone would have disqualified the .45 from possible adoption.
     

  3. collim1

    collim1 Because Alexa said so!

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    They needed more velocity in order to have a 100+ yds effective range.