Not sure if I mentioned it or not, but in testing the cloth patched round balls in my 16/13 bore gun, 13 being the groove depth of the straight rifled tube, the patched balls shoot with much better accuracy than the bare ball loads.

Mind you, I haven't done a lot of shooting with it yet, just preliminary findings. Too, the cloth patched balls lube the bore and keep the fouling soft - another bonus is they don't lead the bores - they can't, being wrapped in cloth. They just don't look as snakey as the bare ball loads is the only detractor.