Using the 100gn Data, drop back about 3 graines from the lowest starting loads and work up slowly. It is not hard, as long as you look at the relationship between the 87gn and 100gn loads and then look at the same plus a little more reduction for the heavier bullet.
Don't expect top velocity though, it will go bang, and take game, but IMR 4064 is too fast for that case dimension and more suited to a larger bore ratio with that case volume such as the .30/06.
Thanks JW
Generally speaking, and from 6mm bore size up, the more restrictive the case mouth, the slower the powder needs to be if you want full velocity for the chambering. Onceyou hit about 50 grains powder capacity, the slower powders start to offer advantage.
JW
