Bryan---ditto on what the guys have already said. I had the same problem when I used bore butter. I just clean my barrel as normal for storage. Then I clean again before a shot when I take her out. My method of cleaning is one WET patch ran down, flipped over and ran down again...then 1 DRY patch ran down, flipped over and ran down again. Seems to work well for me. Bore butter is CRAP!!!!---DrASUS