36 grains of 3F and a 50:1 lead/tin cast bullet. Dont worry about the bullet diameter, it will bump up. (Powder is compressed about 1/8th with a jacketed bullet in unsized but expanded brass, then the lead bullet simply sat on top.)
26 grains of H4198 and a Hornady 200g XTP if it ill take .430 bullets otherwise whatever jacketed .427s you can find. Use a heavy crimp with a Lee crimp die on this load. (This is at black powder pressures but good velocity.)
8 grains of Unique and a lead bullet 50:1 lead/tin is a good mild and accurate load.
18 grains of H4227 (again, heavy crimp with the Lee crimp die)
Once you shoot the BP load you probably wont look much farther, too much fun, and it sounds like it will kill a buffalo.
If you want a mold, I highly recommend the Accurate Molds 43-215C.
