There is a thing called Carbon Ring. It is a ring shaped carbon build up just around the throat of the barrel.
https://www.rimfirecentral.com/forums/showthread.php?t=747449...
Type: Posts; User: Ultimitsu
There is a thing called Carbon Ring. It is a ring shaped carbon build up just around the throat of the barrel.
https://www.rimfirecentral.com/forums/showthread.php?t=747449...