My friend there is a lot of info in the forum about browning under the tutorials. But here is my method, polish the barrel, then clean, clean, clean, clean the barrel,use alcohol, no touching after cleaning with your hands, support the barrel between two knife edges or stuff barrel onto a well supported dowel. Use a propane torch to "evenly" heat the barrel until a drop of water dances off it. Then apply the plum brown with a clean white rag, use gloves, but you probably knew that, after three or so coats wash the barrel with warm water , dry and when it cools apply gun oil to stop process. You will have to oil the barrel for the next couple of days to be sure the browning process stops. Kind of a crude explanation, there are better ones in the tutortials, but I felt you deserved an answer. Thanks for stopping in ! Regards GH.