carbon build up in 30 BR barrel

[reelxprs]

Just got home from the NC 200-300 Yd. match and bore scoped my Bartlein barreled 30Br rifle( which I shot very bad- finished 24 out of 27 shooters) and have a lot of black carbon build-up in the lands. My question is what do you guys use to clean the carbon out of barrels?
Thank you for advice.
Jeff Fountain
PS At the last match there I finished 4 @ 200 yds.

[SGJennings]

There are two kinds of carbon fouling. Carbon on down the barrel and the infamous carbon ring right at the junction of the neck and rifling.

For the latter, search on here for "carbon ring".

For the former, there are many ways to get it out and many different products. For the really stubborn stuff, I use repeated treatments of Bore Tech Carbon Remover and some scrubbing with a brass brush. Some folks use USP Bore Paste or Iosso.

Greg J

[zippy06]

There are two kinds of carbon fouling. Carbon on down the barrel and the infamous carbon ring right at the junction of the neck and rifling.

For the latter, search on here for "carbon ring".

For the former, there are many ways to get it out and many different products. For the really stubborn stuff, I use repeated treatments of Bore Tech Carbon Remover and some scrubbing with a brass brush. Some folks use USP Bore Paste or Iosso.

Greg J

The carbon ring is left over solvent and carbon in the chamber after cleaning. It is trapped between the neck and shoulder of the chamber by the O-ring of the bore guide. When a new round is closed in chamber, the liquid is pushed around the chamber and stops at the chamber neck of the case. Some goes into the bore.
It gets cooked. Forms time after time after time. Most folks put a chamber mop with a patch on it into the chamber. If that patch does not come out dirty. Your chamber is still wet. This can be seen with a bore scope also. That's how I found it.
Cheap borescope plugs into any computer or phone. Win 10 has a camera program. Also used for the camera/skye mode.
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
I get this out with a plane bore mop. It comes out dirty. I wash it off with Break Kleene in the green can. Stores store have big cans of the stuff...

[zippy06]

Um. from 2014........oh, well. still applies...

[rsmithsr]

i disagree with the location and how it gets there.
by design there is a gap from the end of the case mouth and where the rifling begins.
it can be seen in any chamber drawing.
easily 15 thou sometimes more. this gap is where the ring forms when you fire the rifle.
a great place to grow a carbon ring
i spec all my reamers with .005-.007 gap....much less area to grow a carbon ring
i clean for carbon at the start of cleaning
( i trim to length on every reload)

[Pete Wass]

and have been wrong on a lot of things I have said previously. I kept trying to find faster and faster ways to clean the carbon from my barrels. I used Rem Clean on a rimfire barrel and after a few cleanings, it quit shooting. I think this goes to what Frank said way back on polishing. so, I tried the Rem Clean again in my CF barrels using a worn out brush and the 000 Steel wool. Just a few strokes and the barrel is spotless. What I have noticed is the Free bore, creeps faster so that has to mean the grit in the Rem Clean is scouring off metal. The barrels still shoot great tiny groups but one has to pay attention to the creeping free bore.

I do use Wipeout and find it to be a great carbon cleaner. Isn't as instant as the RemClean but it does take carbon out readily. So yeah, one can ruin barrels by cleaning too aggressively. There is a YouTube of a well known shooter cleaning his barrels with a Nylon brush on a cleaning rod driven by an electric drill. He states that that method does not hut his barrels and has had barrel makers check and then say he hadn't damaged his barrels. So, I clean my 30 barrels now after a match, around 80 rounds most matches and the .22RF,s well, they are a different animal. Some barrels don't mind being dirty and some want to be cleaned, from what I've seen so far.

[doghunter]

Well, if anybody can invent a solvent to dissolve carbon then they would be extremely rich.

Many of these over-hyped 'witches brews' claim such abilities, yet they are just a panacea (also a good earner) and a lubricant for a good old fashioned mechanical bore brush and a bit of elbow grease. Nylon or brass is your choice!

Just type 'is it possible to dissolve carbon ?' into any search engine and make your own decision.

* doggie *

[abintx]

... have a lot of black carbon build-up in the lands. My question is what do you guys use to clean the carbon out of barrels?

Run 3 to 5 tight fitting patches of J-B Nonembedding Bore Cleaning Compound [get the large size, it will last forever]: http://www.brownells.com/gun-cleanin...-prod1160.aspx back in forth in the entire barrel. Clean the barrel before and after using it. It goes in gray and Always comes out black.

And, on a slightly over sized brush, at the end of the neck chamber. Twirl it about 30 revolutions. How much? About the size of a good sized pea [the vegetable].

[Wilbur]

When you get the carbon out and it shoots poorly once again, start saving for a new barrel.

[Frank Green]

When you get the carbon out and it shoots poorly once again, start saving for a new barrel.

......How many rounds are on the barrel? That's one question I have. What type of cleaners are being used is another?

You also have to be aware that even if your using the same type/brand of powder that they will vary from lot to lot in how clean they burn etc....it might not be the barrel. Also I feel some of the liquid bore cleaners work better than others.

I don't like the paste cleaners. I'm o.k. with JB bore compound and Rem.40x bore cleaner for working on the carbon build up/fouling.

Later, Frank
Bartlein Barrels

[skeetlee]

Remington 40x is my carbon remover of choice. lee

[RJM]

KG1 got a bunch of black stuff out of my 30 BR barrel. I don't know if it was that or the repair Leupold did on my scope, but it shoots predictably now.