J-B® Non-EMBEDDING BORE Cleaning Compound

This stuff really rejuvenates older rifles. I like to refinish-fix up old rifles. Many of these have been in a closet for 50 years and weren't cleaned the the 20 or 30 years before that! A single cleaning with JB results in a shiny bore and better accuracy in each rifle I've tried it on.

This is for when you think you have gotten the barrel clean.. this will make you think again, the final outcome is like a mirror.

Works as advertised. My favorite bore cleaner.

I have a MSR approaching 10K rounds. Patches were coming out very faint gray. It was as clean as Hoppes and a brush would get it. Borescope showed carbon still in the grooves. Kroil soaked patch with JB wrapped around a brush, first patch came out black. 10 passes, repeated 5X with a new patch, bore is clean to bare metal, except inside some fire cracking. Pleased with the results, but haven't had time to shoot it.

It works as advertised it clean the bore right down to the metal good stuff