Hard carbon removing, help!

[Murray Brook]

I've used Fritz and find it work real good. The Green stuff.

 

[HTSmith]

put the guide on the rod before you put the brush and JB'd patch on the rod

Another gem. Why can't I think of stuff like that

 

[Martin52]

Does the EGR valve cleaner spray remove carbon deposits?


A Winning in the Wind video recommends using methyl isobutyl ketone, which is a solvent for nitrocellulose, which is the base for gunpowder.
Do you have any feedback on this?

I have not used EGR valve cleaner but I have used this:

Nulon - Pro Strength Throttle Body and Carby Cleaner 400gram

Nulon Pro-Strength Throttle Body & Carby Cleaner is specifically formulated to quickly and easily remove gum, sludge, varnish, grease and dirt build-up from carburettors, throttle bodies, automatic chokes, PCV and EGR valves.Benefits: 400Gram Aerosol Can Dissolves carburettor deposits inside and...

theskylineshed.com

Regarding methyl isobutyl ketone, yes, Winning in the Wind (@Keith Glasscock) has reported on this being an ingredient in Free All.

Free-All Penetrating Oil

Free-All Penetrating Oil, RE06 The original rust eater, Free-All Oil penetrates rust, scale, and corrosion to free rusted or frozen parts and assemblies quickly and easily. This deep penetrating oil loosens tar, lead, grease, and carbon and graphite deposits. A rust-eating formula makes this...

www.dultmeier.com

 

[JLT]

I read somewhere that there is no known solvent that dissolves carbon. You might soften other chemicals that it's mixed with? Sounds like you need an abrasive.

This is true. Carbon is not soluble. It requires mechanical action (preferably with a good surfactant) or acids for removal. Acids are not recommended. If the acid used is strong enough to remove the carbon from steel, it is strong enough to affect the steel upon which the carbon is deposited.

Brushing and occasional use of a mild abrasive like JB of ThoroClean will keep the hard carbon under control. Give ThoroClean a try. It works very well.

 

[Turkeytider]

JB Bore Paste. Recommended by others here already. This stuff works great. Including getting rid of carbon rings in the throat.

The blue, not the red.

 

[Infrequent Shooter]

What about getting a mop soaked w some ammonia solvent and letting it sit right at the 'spot'. I don't think (?????) it would hurt the barrel. muzzle down of course. some older heads would know better. what about a bronze brush w drill attachment? PURE guessing here.