you can cut the piston off, shot cup should just slide down, cornmeal on top of powder will seal the heat from shotcup,no melting. I use 62gr. 3f, cornmeal,shotcup, 1 n 1/8 oz #6, olive oil soaked 1/2" fiber wad on top. great patterns. my 3 flinters .55 n one .56 t/c converted to flint,all put...