Hey I own several Hawkins and several Renegade, all but one are .50 cal, the odd one is a .54 cal, two are flints. I swapped the nipples on the cap lock rifles for nipples ment to use the musket caps, give you a much hotter spark and stops any worry about mis-fires with the regular caps (never had a mis-fire, but was always worried about one. A nipple wrench is another must, I always take off the nipple before cleaing, helps the water be pulled up the barrel easier. I always use Murphy Oil soap with warm water then use a compressor to blow out as much water as I can after then a coat of bore butter in the bore and a very light coat of oil. I buy my black powder o the net 50 lbs at a time and don't use any substitutes, besides I enjoy the odor of the burning bp. The owners manual for the rifles should give you lots of informtion, and Lyman makesa good black powder book, but the best thing is to find someone in the area that also shoots bp and they would be proud to teach you. The TC Hawken can take loadsas high as 110 grains of bp, but why, work up and find a good low recoil good load, and I like the TC maxiballs, I cast my own, from pure lead no alloy.