No need to look. If it is a C. Sharps, that Badger barrel will need a 650 grain bullet or better. The throat on the C. Sharps has a longer leade than the Shiloh.

Your best bet is to get a Saeco 583 50 caliber bullet, Starline cases, and some KIK 2f powder. Load 90 grains and light it off with a CCI BR2 primer, and use a thin wad cut from wax paper between the bullet and powder. Don't even fool with the lighter 450 to 540 grain grease groove bullets as you are just wasting your time. If this 650 grain Saeco bullet doesn't shoot--and it is the only bullet I have found that will shoot in my rifle--your only other option is to get Steve Brooks to make you an adjustable paper patch mold. Then the grand experiment will start, and you are going to be frustrated and wadded up chasing your tail for at least a year and probably two before you decide to rebarrel the rifle to a 45. BTDT. Good luck.