I have a wierd black ring about an inch down the bore from the crown. Only on the lands,not on the grooves. So like a dotted line circle all around the inside diameter. It's not damaged. Rubbed it really good with qtip soaked in solvent. Doesn't come off. Didn't snagg the cotton on the q-tip at all. It shows up in these picks I took sort of. Looked different in reel time. When you stand pack and look at the rifling it looks perfect but when you shine a light on it a certain way you can see these dark marks. Any ideas? Browning AB3 Composite Stalker Sent from my SM-G900W8 using Tapatalk
No clue...can't see what you are trying to point out in photos. How many rounds down range..,?! If it: isn't raised in the barrel...and it doesn't show as a bulge outside the barrel...and it doesn't affect accuracy... I say it's not a problem.... { My 2 cents...}
If this dosent remove the ring, only a good set of files will. I'm kidding on the file part. http://www.brownells.com/GunTech/Shooting-USA-JB-Bore-Cleaning-Kit/detail.htm?lid=16450
