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AR-15 with 20” Barrel .223 55gr.

Home › Forums › Reloading Database › RMR In-House Bullets › AR-15 with 20” Barrel .223 55gr.

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  • December 14, 2021 at 6:09 am #395752
    fjp18
    Participant

      .223, 55 gr. RMR FMJ
      26.0 gr CFE 223 powder
      CCI #400 small rifle primers
      Various brass cases trimmed to 1.750”
      Average Muzzle Velocity = ~3100 fps
      Sub MOA @ 100m

      December 14, 2021 at 6:21 am #395754
      Peter Turner
      Participant

        What is the twist on that barrel?

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