Slug the gun to be sure of diameters and throat, send the slug to me and let me decide what will fit. Most likely the LFN will be best, cut without crimp groove, and loaded over compressed charges for jacketed bullets. Gas checked of coarse. Air cooled wheel weights will be adaquate if LBT bullet lube is used, and will perform almost exactly like good jacketed, on game, or paper, without leading. It's a beautiful cast bullet gun because of it's low working pressures and velocities, but it's mean on game up to Moose.