Whew, 56.1 would seem like a rather stout load! I have tried the 52 with a 200gn bullet but didn’t get close to their book indicated velocity. With a 200 Hot Cor, my notes say I got ~2650 and there was an annotation of “no psi signs at all”.
I have a box and a half of 200 Northforks I should play with. Relatively short bullet so I could stuff quite a bit of powder in there.
