Just kicking around expensive ideas... let's say I had a rollingblock with a full profile octagon barrel. And I wanted to re-chamber and re-bore it for 577 Snider, (or even .577 3" for black powder iff'n I was feelin' froggy ) where would I find someone up to the task?

www.cutrifle.com lists new barrels in .585, for the 577, and he does reboring also, so would probably be able to do it. His prices seem very reasonable, well under $400 for a rebore and rechamber.

I would second cutrifle.com.

Dave