I shoot a Lyman Traded rifle. It has the same twist but the barrel is a little longer. They are excellent shooters. 90 grains of 2f black powder (mine are flintlock) and a .490 patched roundball is an excellent load. It also shoots power belts very well and XTP's. I never shot it long distances though as in 100 yards. I only shoot 75 and under with my open sight flintlocks for the most part.