this post was submitted on 15 Feb 2024
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The tumbling thing isn’t a myth, but it’s not the round itself that does that it’s a combination of the round along with velocity and terminal ballistics. 5.56 was made to be shot out of a 20” barrel in order to reach terminal ballistics and that’s where the yawing (tumbling) effect takes place. This makes some sense since he mentioned falluja because the marines were still being issued M16s and not m4s (m4s have a shorter barrel and therefore do not reach the required velocity with regular 5.56)