GEORGIABOY-
what have you got against tubs final finish system?
I've got nothing against them. BUT, (In my experience/opinion) I would never use that system on a new, premium barrel without giving it a chance to prove itself first, and even then I would give it a careful exam before resorting to 'slugging' or other procedure to clean/smooth the bore and lands. Using the Tubbs system on rough factory barrels sometimes helps, but that would be a last resort for me and only after calling the barrel maker.
The cerekote in the barrel is unfortunate, but should clean up with a range session.