Hello There,
It shoots a .457 round ball. There is some minor tiny dark spots in a couple of places, nothing major. As far as pits in the barrel, I don't see anything in there, but I don't have a bore light, only a flashlight. I can send you some more pics tomorrow if you are interested. While it's not in mint condition, it is (what I would call) good-very good condition. Thank you.
Sean