This video tests 110-grain subsonic .223 ammunition, evaluating its terminal performance and reliability. The test reveals that while the ammunition is subsonic from a 16-inch barrel, it did not reliably cycle the action of the AR-15, requiring manual cycling. Terminal ballistics showed significant yawing and a total penetration of 19.5 inches in ballistic gelatin, with initial disruption around 3 inches. The presenter suggests limited practical application for typical users, comparing its niche utility to subsonic 300 Blackout.
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