Quote:
The whole point of the 300AAC is suppressed (silenced fire) which requires a can ie noise suppressor and a projectile at subsonic speed.
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Not at all true.
Let's compare the 300 BLK to the 5.56. A 125 grain bullet at 2200 fps has more power and shoots flatter than a 224 62 grain bullet at 2950 fps. The 300 blk powder charges are a bit lighter but the bore is larger so the 5.56 will probably be a little less noisy suppressed.
But it is true that subsonic is what really makes the 300 blk shine. It is less noisy and more consistant than a subsonic 308 winchester.