Reid, I use 2 to 3 (100 to 150 grains) Pyrodex pellets, or 2 Triple 7s (75 grains each) in my Wolf and my Optima. My BP rifles do best with 348 grain hollow point Powerbelt bullets, or 275 grain Aero=tip Powerbelts. What the rifle prefers depends on the rifle. My friend has a wolf that preferes 100 grails of loose triple 7, and hornady sabots. (.45 caliber round, sabots to fit his .50 cal, I'm not sure of the weight) Buy small packs of different weights, and play with the cahrge behind it. Just remember to not exceed the total allowed charge of the rifle. Best of luck, and enjoy your new toy.
If I have to explain why I ride, you wouldn't understand. Explaining sex to an alien would be easier than explaining the feeling, one that boils all that is going on in your life down to what really matters each time you are in The Wind. All I can say is, Life is not Life without it.