It seems when I try to push my velocity in my K31, using linotype with 50/50 beesway/alox, I start to lose my groups. It seems to be starting around 2050-2100. Could this be a lube issue? The other day at 1950 fps I was getting sub 2" groups then yeaterday with a step up 3-5" groups.
boolit is lyman 165 SIL.