alliant 10-X, IMR8208XBR, accurate 2230, Hodgon 322, with 35 gr berger, 32 gr Sierra B.K. all shoot great. With these powders I start 23gr & work up to 25 to 26 gr. Be careful, velocity & pressure come up pretty guick, I work up in half gr increment's, when I get near max, back off to 3 tenths gr.