Yamalube ring free for Bbl Carbon Removal?

[jelenko]

Thank you I will check those things out. I just don't know why the carbon and copper came back so soon.

Carbon builds up pretty quickly even after just a few shots.

Where are the streaks of copper? Usually, copper deposits down the barrel [i.e., away from the chamber] come from roughness in the throat. The copper is scrapped off by whatever is causing the roughness, vaporized by the hot gases, then redeposited further down the bore.

 

[rebs]

Carbon builds up pretty quickly even after just a few shots.

Where are the streaks of copper? Usually, copper deposits down the barrel [i.e., away from the chamber] come from roughness in the throat. The copper is scrapped off by whatever is causing the roughness, vaporized by the hot gases, then redeposited further down the bore.

yes the copper streaks are further down the barrel

 

[jelenko]

yes the copper streaks are further down the barrel

Take a look in the throat area with your borescope - if there are marks running perpendicular to the rifling, you could try hitting the area with some Iosso/JB. That could smooth them out enough to reduce the coppering.