I usually check the barrel with my Hawkeye Borescope after cleaning with Bore Tech C4 and have found it to be excellent in removing the carbon/powder fouling. If my Hawkeye showed the C4 did not work I would not use it. My cleaning routine is to follow the cleaning instructions on the C4 bottle.Matt P said:Have you checked with a Bore scope after cleaning ??Reason I ask is I have and the C4 is in my opinion useless, the only way I have found to remove carbon/powder fouling is JB or similar. A bronze bush will help with regular use but you will still need to use JB ever 300 or so rounds to keep on top of it.snakepit said:Bore Tech C4
Matt P