Having been to a number of firearm manufacturing facilities in which barrels are made, I have had occasion to ask, "What's the best way to clean a barrel?' How frequently should a barrel be cleaned? And what kinds of rods, brushes, jags and patches work best? Answers from manufacturers, custom barrel makers and high-volume shooters were as different as the people who gave them. So, is there a right way or wrong way to clean a barrel? If the former, what are the specific techniques involved? What should you see inside a "good" barrel when using a bore scope? What are your experiences?