It does drop but it's still there, adding velocity right till the last mm.
I agree that bullet weight / type is just as important and deffinately effects the pressure generated. He'll, I was surprised to see the 140 bergers have a higher mv than the 140 Amax. Still don't quite know why as the seating / powder etc was all the same.
Say you're right. Does this mean short barrel guys should start using magnum powders because they have flatter pressure curves?
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