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Thread: Subsonic 300BLK , AR15 loads

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  1. 28-08-2016, 04:43 PM #5
    Glycerine
    Glycerine is offline
    Member
    Join Date
    Mar 2015
    Location
    Auckland
    Posts
    564
    H4198 works for me, still working my load down,
    some success with H4227 (same as AR2205), would cycle but no bolt hold open

    I had to open up the gas port on my barrel to 2.3mm to get subs to cycle (11.3" wilson with pistol gas)
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