I agree with John. And why not?
The thing that makes a rifle barrel "good" is the quality of the bore and chamber as well as a concentric crown.

On the highest quality barrels the steel itself is worth about $6-$10. The rest of the cost of a barrel is all about labor and quality machining. So machining the old barrel to high standards is the same as machining a new piece of steel to the same standards.

I usually recommend a new barrel because unless there is some reason to retain the old "look" of the original barrel. The new one gives you options you may not have with a re-bore (like a linger barrel or a heavier contour or different contour is it was wanted)
But there are times when re-bore is a better option and as John said, there is no reason a good job is not going to be just as good as a new barrel.

Last edited by szihn; 11/12/17.