10-23-2018, 10:39 PM
stanc Wrote:There are other factors to consider. For one, with bullets of equal weight, 6.8mm permits higher muzzle velocity (than 6.5mm) at the same operating pressure.
OK, sure, I'll give you an extra "free" 25 fps due to the "piston area effect."
But your bullet of "equal weight" will give some of that back due to reduced BC.
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