12 GA HEVI Bismuth loads
I cut open five shells, from the same box as the shells to be patterned, and the components (powder and shot) were weighed, counted, and measured for consistency. Here are my findings from those dissections.
12 GA 2 ¾" HEVI-Bismuth load
1 ¼ oz #5 Bi (228 pellets) @ 1400...