This video details the reloading process for 300 Blackout subsonic ammunition, focusing on the 190gr Hornady SUB-X bullet with Vihtavuori N120 and Accurate 1680 powders. It includes comprehensive testing of velocity, stability, and terminal ballistics through ballistic gel, comparing results against Nosler 220gr Ballistic Tip and Hornady 220gr ELD-X. The SUB-X demonstrated reliable expansion at subsonic velocities, while other tested bullets showed instability or fragmentation.
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