I recently purchased a Pedersoli Indian Trade Musket. I bought it with the intention of shooting mostly ball and some shot. Well getting good useful shot patterns and densities at varying distances was almost too easy. But decent round ball accuracy eluded me. No matter what I tried I simply could not get a consistently accurate group at 50 yards or beyond. I also discovered that my sight picture for shot would be very different than with ball. For some reason the ball loads hit the target VERY low in comparison to shot loads. Was very frustrating. Being a bulldog by nature, I just would not give up. Went shooting with a good friend today. He wanted to verify zero on his modern slug gun for deer season. My first shot of the day was roughly 1 foot higher than the next 3 shots. I then loaded a SkyChief shot load for him shoot as he had never shot a flintlock before. He ended up shooting two shots. I went back to my ball load. First shot again went roughly 1 foot high. He mentioned that maybe it liked a clean oiled bore. So I decided to try something different for a change. I had been using 80 grs 2f, a mink oil lubed patch either .010", .015", or .018" and either a .600" or .610" ball. Just trying different combinations to see what worked best. This time I used 80grs 2f, 1/8" card, a SkyChief oiled wad, .015" patch lightly dampened with the excess oil from the wad, and a .600" ball. First shots went over the target into the berm. Remember I'm trying to compensate for very low hitting ball loads. I then tried the same sight picture for the shot load. I proceeded to put 5 shots into a group measuring 3.875" CTC. This was at 50 yards. The group was dead on. Not low, high, left or right. I then shot 3 at 25 yards. 1/2" CTC group. This was dead on as well. I went to the 75 yard bench which is actually 82.2 yards. Shot 4 shots holding dead on the bull. One shot went 3.5" high of the X. The 3 other were an average of 4" low and were 3.5" CTC. EUREKA! Moral of the story, stick with it! I think I do know what the problem was. The patched RBs without the card and wad had an excessive amount of blowby and were not achieving proper velocity. The addition of the card and wad helped cure that. The damp wad effectively cleans the barrel when rammed down so that helps eliminate the 'clean bore fliers'. Might be unconventional, but it works.