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Type: Posts; User: Kiwi Greg

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  1. 29-08-2012, 04:26 PM

    Thread: AR15 .300 Whisper / Blackout help

    by Kiwi Greg
    Replies
    24
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    4,635

    Re: AR15 .300 Whisper / Blackout help

    The data I found had 11.2 grains of AA1680 16" barrel 1010 fps for 220smk subs

    AA1680 seems to be right between 2205 & 2207 so they maybe worth a try.
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