AR-15 with 20” Barrel .223 55gr.

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RMR Bullets Home › Forum › 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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