H100V gave me best velocity and top accuracy.
Not the best for temp stability but one to try, working up a .257R load.
DF
Hodgdons H100V meters well (use a custom set of Lee type dippers) and I use a fair amount of it in various cartridges. Chuckle, have even done respectfully with it in .308 Win and you will not find any published load data for it....fellow range member ran Sierra's quick load for me as an experiment.
Its one of my favorite powders for the 7x57, the 257 Roberts big brother. Does well for me in my 257R rifles too.
