The solution is plastic shot cups and blackpowder don't mix well....not wanting to listen to people I tried them years ago in a 13 ga. William Powell sxs muzzle loader I had.
There was a little mess I could have worked around it but there was really no improvement in the pattern using the shot cup. It went from nothing to almost slug shooting.
I was using wads that were not slit and i was slitting them myself....no real improvement untill it started shooting too tight.
It takes choking to pattern consistanly at distance
