Yes I shoot hollow base bullets with proper lube (bees wax and tallow) and do not fool with paper cartridges as it is just as easy to measure and load at the range with loose powder and ball. I don't have a proper size round ball mould and was curious if some one has experience with the difference in hollow base vs round ball. Oh, I am getting "minute of pie plate" groups at 50 yards but hope to do better than that, the Sharps Shooters did in Mr. Lincolns war! Jimbo