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  1. EvilBetty

    Resizing 5.56 LC brass to .300 Blackout... Experiences?

    %100 agree. Save that .223 brass. Use fired brass for 300 BLK. Tumble brass Universal decapping die to pop the primers. (Or if using wet stainless tumble afterward) Trim to size using HF mini cut off and jig Deburr Anneal brass Size brass final trim prime powder and seat. The...