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Stupid question time

Discussion in 'Caliber Corner' started by bwh21, Jun 7, 2010.


  1. bwh21

    bwh21
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    I was checking into AR-15 ammo, specifically .223, and I noticed that an overwhelmingly high percentage is between 50 and 60 gr. Other rifles have much ammo weighing 4 times that much and even 9mm is over 125 gr. What's the deal with such a light bullet with the ARs?

    I don't know much about ammo, so my only guess is that a projectile that light can be thrown much faster, but that is only a guess.
     
  2. triggerjerk

    triggerjerk
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    Smaller projectile= higher velocity potential.

    Plus most AR barrels have rifling twist rates that suit 55-69gr bullets.
     

  3. cowboy1964

    cowboy1964
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    Yep, velocity. Around 3000 fps. By comparison your typical 7.62x39 (AK-47) round is around 2100-2300 fps (but it weighs 120-150gr).
     
    #3 cowboy1964, Jun 7, 2010
    Last edited: Jun 7, 2010
  4. Kalmah

    Kalmah
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