No patch unless shooting the round ball. The minie bullet has a hollow base that expands upon firing to grip the riflings. That way the soldier could easily load the undersized bullet into the rifle that automatically expanded to fit the bore when fired.
With over 15 perCUSSIN' revolvers, I've been called the Imelda Marcos of cap & ball.
SASS#3302 (Life), SASS Regulator, NRA (Life), DGB#129
Wolverton Mtn. Peacekeepers (WA), former Orygun Cowboy (Ranger, Posse from Hell)