[Austin W Hogan]

I have some old DuPont data that recommends 3/8 inch wads for paper shells. I have measured the forcing cones of some livebird/clay bird trap guns, and this seems a perfect match for their .740 bores; that is the wad contacts the barrel before leaving the case mouth. Does anyone know the length of wad column used in the early Super X 2 3/4 and 3 inch loads?

Thanks, Austin