Not sure the cartridge you are using, but I plan on doing load developement with Reloder 26, H-1000, Retumbo, Ramshot Magnum, and IMR 8133 in a .338 Norma with HBN coated 300 Bergers as soon as the smith has it put together, and will write up a detailed thread on all the powders performance for accuracy, consistency and velocity. I'm pretty excited for this one, should be a hammer, and about 11 lbs ready to hunt with a 28" cf barrel.