I got back to reloading a few years ago, and checked out my log and current manuals,"big diff". then I tried out the old loads with the old powder, and it was OK, not "Jake" like it was then, but neither am I. So we will assume that the powder loads will change as all new production changes. However is the 30+yro IMR 4831 that I just uncapped, perform as it was listed in the manuals of Hornady and Sierra of that same period?
Jim