They did a chamber insert for me on a Perazzi TM1 that was out to about .830. Branny new now. Had to resize every hull that had come out of it. They brought it back to factory specs. (.808 i think). Highly recommend their work.I agree, Laib's does an excellent job with this type of repair, at least on 3200's. They dovetail a hard metal insert into the breech face and this gives new life to those worn guns. Nice people to work with as well.