"Consider this, a hook breech is finely tuned metal parts matching with each other while a fixed breech is metal mounted against wood. Over a short time the wood metal fit will change while the metal to metal will change after years of service, but not as bad as the other."
I hadn't thought of that before. It certainly seems like a valid point. The question is, how tight and well-fitted is the breech to the tang? I guess that would ultimately decide how accurately the gun would shoot. Problem is, I'd be buying one of these rifles sight unseen. If I get one that is kind of loose, how difficult would it be to tighten the fitted parts?