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  1. General Reloading
    I've been loading 300 blackout rounds for a little while now. I measured the fps of the rounds when I shot them and they were just under the speed of sound. Once I saw how close they were to not being sub sonic, I lowered the powder by a few tenths of a grain to make sure I don't ever have any...
  2. General Reloading
    I don't see a lot of information on subsonic 7.62x39 ammunition. I looked through the loading forum and saw some banter, but no one claiming success. I, specifically, want to shoot this suppressed through my AR with a 16" barrel with a 1:10 twist. If I can get a subsonic loading, I am...
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