Bore finish question

From the Schuemann barrels website

http://www.schuemann.com/LinkClick.aspx?fileticket=3zZ4oir3t50=&tabid=67&mid=445

My Personal Practice has become to never clean the bore of my barrels. I do use a brass rod to scrape the deposits out of the chamber. But, I've learned to leave the bore alone and it very slowly becomes shinier and cleaner all by itself. Years ago I occasionally scrubbed the bore with a brass bore brush. But, doing so always seemed to cause the bore to revert to a dirtier look with more shooting, so I eventually stopped ever putting anything down the bore except bullets...

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it isn't corroding and it shoots OK

yeah, you should mess with it and complain, that will improve something

It could be copper and or lead fouling. Maybe clean it and then think about polishing it.

I bought a new, lower-end (Custom II?) Kimber at about the same time as you - 2002 or 2003. It was new from the factory and purchased from the local gun store. It had rust on the grip safety and the inside of the barrel was frosted. At least, frosting was the term I heard for the condition at the time. The gun shot fine but nothing would alter the condition of the barrel. I was one ticked-off Kimber customer. I attributed the weapon's condition to a disgruntled or inept inspector who was letting junk leave their factory. Condition wise, it was the worst gun I'd ever bought at that time. Quickly traded the gun off. Have never seen a Kimber before or since that left the factory like that. Recently got a Team Match II and it's fine. Point of all this is the gun may have come from the factory like that unless you know it was shiny at one time.