As some of you may remember I recently bought a Thompon Renegade in .54 cal with a Douglas barrel. I have read through many posts and do understand that it will need to be tested to find the right combo of patch size, round ball size and powder. I have measured the bore at the muzzle and it came in right at .540. My thoughts are that a .535 round ball and .018 pillow ticking might be the best place to start but would like your thoughts.

Still trying to decide between black powder, pyrodex or 777 also.

Thank you

Mark