CVA also makes a good muzzle loader, and cheaper than TC in most cases. Its usually a toss up between .50 and .45 cal. I shoot a .50cal cause its easier to find components for, but it also has a bit more power. the .45 cal shoots a little flatter. I shoot Hogdon Triple Seven 50gr pellets (150gr loads) and a 250gr Hornady SST sabot and it cuts about 1" groups at 100 yards open sights