Charlie, Ballistic Products Inc. has a little info on brass shotshell loading, mainly for black powder. The July issue of "Handloader" is supposed to have an article on brass shotshell loading. I use .444 brass and load with a standard shot wad and what ever reloading data I have for 2 1/2" shells. I don't think you get as much pressure since you have no crimp to hold it and the wad fits tight only at the bottom of the shell. Good luck, JamesIII