I've never really been interested in them, but have just come across a really, really nice Holland 500BPE, under-lever, hammer gun.

Definitely a "graded" gun with 90% coverage, etc. Mechanically the gun is "right" and everything is fine, good shape, un-monkeyed with, etc...

Except, OF COURSE, the bores! (If they'd only knew then what we know now - our forefathers in the double gun world would have taken better care of thier bores!)

They're not as bad as some I've seen, but for arguments sake - let's say I want them as good as new agian... what can be done with them?

I'm familiar with "up-boring" one calliber, but there's not enough steel to go much above the .50 caliber in these barrels - besides, there's not anything between the .50 and .577 cartride wise - is there?

I guess the big question is - is there anyone that reliably can re-line the bore & chamber?

FYI - They're fluid steel - not damascus.