In theory, it seems to me that a properly fitted through lump could be made to cam the barrels back against the breech face. I have some that seem to do that very thing. If so, that would be a big plus to the design. The big theoretical minus is that actions can stretch with heavy charges and any additional metal between the breech face and hinge pin adds strength. Remember, this is a theoretical debate only--both designs are good and proven.

John McCain is my war hero.