I know this is heresy but I use all 12 gauge hulls interchangeably. With the same load of powder, primers, and shot they all seem to work with very little difference regardless of which hull I stuff them into. I generally miss a few clay birds out of every 25, but I don't blame the load. Swapping wads seems to have more impact than changing hulls.
I'm glad I'm not the only heretic.
