Originally Posted by Jesse Jaymes
Think I pist JB off, so can anyone explain his theory of "4" in terms of fps increase vs case capacity?


I think what you are asking is the rule of 1/4, meaning that for every percentage gain in case capacity, you get 1/4 of the gain in velocity.

ie. 8% more powder, 2% more speed.

I think. But I could be wrong.

Originally Posted by ingwe
This is a shooting forum, there is no place here for logic.