In 54’s we use 70 grains 2F, an over powder card, a 28 gauge plastic shot cup that holds 70 grains of #9 TSS (by volume),an over shot card, then a olive oil soaked 1/2 inch thick fiber wad over the top…. Kind of a modified sky chief. Deadly at 30 yards. I get the TSS shot cups from ballistic products inc.