TheNatureBoy
New member
I've only removed copper fouling from a rifle barrel (.280) once and that was because it wasn't shooting the tight groups that I was accustomed to. The rifle went from stringing, groups measuring 2 1/2 inches to a ten shot group that measured 1.362 inches at 100 yards. Problem solved. After a second trip to the range I did check the barrel for copper build up after about 30 shots. There was evidence of build up but it wasn't effecting accuracy so I didn't bother removing it. When the groups start to open up I will check for and remove copper fouling if its there