If you shoot 5.7x28mm ammunition

Take a look at RR Weapon Systems 5.7 loads, especially R37X (0.66″ mushrooms on the right). Loaded to full power (2680fps from 16″ AR57 barrel), accurate for the caliber (2MOA), and good terminal performer (penetrates 12″ of gel).

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One Response to If you shoot 5.7x28mm ammunition

  1. Lyle says:

    “(0.66″ mushrooms on the right). Loaded to full power (2680fps from 16″ AR57 barrel)”

    Ow. That might could leave a scar.

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