I guess I'm weird but since lower quality (factory) barrels are rougher,I go overboard on cleaning. My method is to clean between every shot for the 1st 10-20 rounds,and after that,I clean every 2-3 rounds for a box of ammo,depending on individual bore condition. This of course is after hand lapping the bore. It has proved the best way to break in barrels from MY experience as it burmishes the bore without embedding bullet jacket particules in the bore surface.