I used to run standard .50 cal roundball, but im pretty ol fasion that way.
I tried the maxi balls and bore butter for a while but my long rifle didnt like em past 75 yards with the slow 1-66 twist. I guess them new fangled inline deals with them fancy bullets and funny smelling powder probably gets the job done in more ways than one
. If memory serves the ol man used the maxi ball in his 54 tc renegade with great results. A 50 cal round ball in .490 weighs roughly 180 grains, and travels just over 2000 fps with 100 grains of FFF goex powder. After I smoked the face off my chonograph... I never again tried to chrony the conicals
As far as performance, the roundball will be about the size of a quarter and penetrate quite well, even through bone. Sorry, just had to put my two cents in. I witnessed a black bear toppled by a 54 cal swaged minnie once... well placed shot in the bread box, but he nearly rolled right over, and died on the spot.