Stainlessbt99,
I shoot with a guy that puts 1 1/2oz of 6's through his Bavarioun Sewell K-80 all the time. Doesn't seem to hurt it on bit. He has a checkup done it every year at the Grand.
Sorry if my spelling is a little off. I'm not a Krieghoff guy, nor do I have $30,000 to spend on a shotgun. The funny thing is though, there are two guys that have'em.
ec90t