My Thompson Center owners manual, ©1992, says the .56 caliber Renegade smooth bore should be loaded with a .550 diameter roundball patched with a .015 thick lubricated patch. It shows 3 powder loads for this ball/patch combination. A 80 grain 2Fg powder load which it says it the "Optimum Accuracy & Performance" load, @ 1195 fps, a 90 grain 2Fg powder load @ 1285 fps and a red ink 100 grain 2Fg powder load @ 1300 fps. (TC's velocity listings are always very optimistic compared with the real world actual velocities.)