Dave

I have never really understood this.
If one has an otherwise supurb best gun that it spoiled by having damaged barrels, either by neglect or just happenstance/accident. Why would it be a bad thing to return it to the makers or another skilled gunmaker who could replicate those barrels exactly.
If one accepts refinishing, then aside from the metal composition what has changed. Indeed how would one know ?
Just such things have been done to many guns long before the were "collectors" items and were still working tools.

For me it is like rejecting a vintage fararri because it has has an engine rebuild and the pistons have been replaced.
Now if somebody has bolted on a turbo and wide wheel arches then that is a different matter :-)

Regards