In larger bore rifles, paper ctgs. can be used with hard lead balls. These should work almost equally well in wide land, narrow groove barrels as in the wide grooved ones.
: My own 14 bore rifle would not allow over 3 drams of powder to be used with cloth patched WW metal balls, due to the thicker patch needed to seal the bore being too difficult to load. Thicker patches, very useable with soft pure lead balls, were necessary for the hunting and long range accuracy charge of 6 drams of 2F.. WW balls in paper ctgs. shot equally well with 6 drams as patched balls. 1-1/2 MOA for both, same POI as well. They were interchangable.