First time shooting this rifle. Did a small number loaded with RCBS 380 gr RN .446" loaded with 12 grs Unique. Wasn't a powder-puff load. (and no filler).
I had modified Starline .45-90 brass with the rim swaged back to make a wider headspace and they functioned perfectly. I was given two boxes of the Bell Mauser Base and there are apparently two different headstamps but both functioned perfectly. I was watching mostly for protruding primers after firing. The fired primers were perfectly flush with the casehead. And in inspecting the edges of the primer and the firing pin indent all areas failed to show any excess pressure at all. I was pleased with the appearance of the primers. I was bustin' dirtclods at 200 yds with the old krautvapen. Its a heavy dang rifle!