The one thing I've learned is what I thought is clean is not; This is especially true in the throat area where carbon is still evident. My cleaning regiment has been wipeout/outers foam, Butches Bore Shine followed by Eezox for rust prevention. I seem to be getting "most" of the copper out. However, the carbon is another story. How are some of you getting your barrels clean short of using Flitz or other compound?
