I finally decided that I should just make up some rounds using Universal (which has published data) and see what there is to see. Up to the max in the manual, 3.3 grains.
I produced rounds that approximated what the Hodgdon manual says for the 147gr XTP. The manual says 869 fps, I got 852.
But that didn't really satisfy me--I'd rather have a lot more velocity than that.
On a ...



