I agree as Paper Patched bullets did well in both my Sharps and Rolling Blocks over the years - 4 different guns. I believe there is a considerably longer learning curve using paper patched bullets due to the need of lube balls, special wads to allow powder flame mixing with the lube, etc. We had really good results with this, aka Paul Mathews in "The Paper Jacket" and "Loading The Black Powder Rifle Cartridge".
Both are very good books to have whether you shoot grooved lubricated or PP bullets.