I shoot 3 1/3 dram loads [ 95grs ] in my 2 3/4" 12ga Parker. Long time ago - late 70's - I made a 8ga muzzleloader and shot 400grs of 1F and 4 oz of shot. Anyways, you can just about shoot what ever you like when useing blackpowder. I don't think you could load to a too high of pressure when useing a shell - only so much will go in it. The "old rule of thumb" was equal amounts of powder to shot by volume. That was a starting point, then you could fine tune for pattern. Paul
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