Originally Posted by constructor
If you are shooting super sonic the 7.62x39 will be 100-150fps faster than the 300 and the ammo will be cheaper.

What is the big hold-up with the 7.62x39 velocity-wise? Just looking at capacity, it looks really under loaded throwing a 125 at 2,400fps. Seems like it ought to be doing at least 2,600.


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