Ok i was cleaning my gun today and noticed this... I removed the Brake from the muzzle end and looked into the end area of the barrel. The barrel is a Stainless match grade barrel and I have cleaned it after every outing... until no blue patch..Any way i notice on three of the bullet lands they were copper in color about 2 inches into the bore....I cleaned again and i can not get the last two inches to look clean but i have no blue or dirty patches...I have been using bore tech Illiminator and Butches oil. I ran some Boretech copper cleaner down the bore and no change..I tried Butches bore shine and still no change....what is this any ideas???