Carbon ring cleaning

[earplug]

RimfireCentral had a post about using GOOF OFF cleaning fluid to clean the carbon build up on 22LR chambers.
This might be a good way to clean suppressor baffles. Worth while testing on a AR pattern rifle gas system if you went squeaky clean.

[Tim K]

I've been using CLR. It works great, too.

[BPTactical]

There is a spray cleaner called "Spray Nine', it is an industrial strength 409 type cleaner. It cuts carbon like nothing I have ever seen before. It is a caustic cleaner so due care needs to be used on aluminum and such but it works well. Spray it on, let it sit a few minutes, give it a scrub with a brush, repeat as required and rinse off with water.
Get the "Marine" cleaner..
https://www.amazon.com/Spray-Nine-26901S-Marine-Cleaner/dp/B00144B32A?hvadid=241903607475&hvdev=c&hvlocphy=9028728&hvnetw=g&hvpos=1t1&hvqmt=e&hvrand=935369578848607690&hvtargid=kwd-299404305025&keywords=spray+nine&qid=1540302503&sr=8-1-spons&tag=googhydr-20&ref=sr_1_1_sspa&psc=1

[Delfuego]

I wouldn't worry too much about a "carbon ring" on 22lr. You would need a borescope to even know if it exists. Hard carbon rings effect high pressure cartridges (6mm) more that others. Once you have a carbon ring, you really need to scrub it out. I have never found anything that will simply dissolve it. JB bore paste works. Chrome-lined AR barrels will not carbon up like a stainless either. CLR will work, but will also eat steel if left too long.

For 22lr, I use BoreTech Rimfire Blend. It works well and gets lead fouling out. Lead can be more prominent in 22lr than copper or carbon in 22lr.

[BigBear]

I've been reading a lot about using solvents with ultrasonic cleaners for gun parts (bolts, baffles, etc).... anyone have any real time info on that? Seems like a no brainer to me, but I don't know enough about it yet to form an opinion. It works great on my trumpets though...

[CS1983]

BigBear, I’m unsure about others, but I’ve had good success with SimpleGreen dilutions in the ultrasonic.