Carbon Rings

[Laphroaig]

I guess that this is a good forum to post this considering the Teslong post running concurrently. This shot is in my Gibbs 1903A4. My questions are what causes them, and how do you get it out?

Recently, I tried brushing and soaking with Slip 2000 Carbon Killer to no avail.

 

[AMraider]

I don't know what the cause would be nor do I have personal experience but I have read from the rimfire shooters that BoreTech Carbon Remover works pretty well. HTH.

 

[Walkalong]

JB Bore paste. Once the carbon is baked in real good, solvents won't do it, at least none that I have tried. Tactical Advantage and Bore Tech solvents are very good, but after shooting a match where we shoot 100ish rounds 8 to 12 rounds at a time in 1 1/2 to 1 3/4 minutes for 10ish stages, solvents don't cut it for me.

 

[Walkalong]

After solvents, even letting them work for some time.



After three more rounds of solvents and JB.

 

[Laphroaig]

Thanks. I'll dig out the JB and start scrubbing.

 

[Walkalong]

Dirty barrels can shoot quite well, but sooner or later you have to get them at least relatively clean.

 

[Laphroaig]

So I went to work on that barrel today with the JB. Here's a shot after round 1, in which I stroked the barrel real good making sure I dropped into the chamber every pass and then spent time just in the throat, both spinning and back and forth. I think that I made a little dent when compared to my OP. Chamber is to the left.



So I soaked with Carbon Killer a few hours and then went in with a .223 chamber brush both spinning and back-forth. Finished with another round of JB just in the throat area. I took another picture that was slightly out of focus but looked pretty much the same, so at that point I gave up. The rifle is very competitive in Vintage Sniper competitions so it mustn't be a big deal. The bore is probably cleaner than its ever been so it all wasn't for naught.

One thing I did learn is that I have to scrub some of my other rifles with the JB. I scoped my M70 hunting rifle, what a mess!

 

[Bartojc]

One thing for sure you'll find lots of problems and buy a lot of cleaning product once you have a bore scope. I know it is/was true for me. Jury is still out if its a good thing or not

-jeff

 

[Walkalong]

both spinning and

To finally get all the ring in the chamber in front of the case mouth I resorted to a bronze brush on a short rod in a 12volt battery drill. Just ease it in and do your best to keep it out of the throat/leade/rifling.

I took a short old buggered up Dewey rod and removed the handle for that.

I was thinking the pic was the barrel, which is why I said JB, but I see it correctly now.