I just had a old 54 fast twist rifle made into a 58 smooth bore. I wanted to make it a shot gun. I was going to order some felt to make wads. How thick should i order. I have never loaded or shot a bp muzzle loader shotgun so this is all new to me. What are guys making over shot cards with. Im going to make my own punches to cut the felt and cards how tight should the wads and card be. How much shot. I figure 70-80 gr of black powder should be a decent load. Any help would be appreciated.