Your choices are almost endless. Its hard to beat H110 from Hodgdon for powder for full power loads. For practice loads that are fun to shoot, try the 240 grain lead SWC with 8.0 grains of Unique. If you plan to hunt deer with your 44 Mag, I would suggest the Hornady 240 grain XTP with the H110 powder. Any good bullet from 200 grains on up will do well for deer. For bigger game, the 300 Grain Cast Performance Gas checked bullets are hard to beat. I shoot them in My SBH. For these I use IMR 4227 powder but again, H110 will work well too. Unique and H110 will do it all. Some other good powders for different loads are Blue Dot. 2400 and WW-296. Also AA- No. 9. Cabelas sells the Cast Performance Bullets. I load the 300 Grain Cast Performance bullet to about 900 fps to shoot in My ultralite Taurus 44 Mag. About 1200 FPS for the Super Blackhawk.