Carbon build up in chamber.

[JMAC19]

I'm not sure I am posting this in the correct place and I'm sure that it might have been answered before but I haven't been able to find my exact question.
I was wondering if anyone had any suggestions as to the best method to remove carbon build up from the shoulder portion of a chamber (I was thinking JB and chamber mop?). It is on an AR that has pretty much only been shot suppressed and I thought I was getting clean until I took a good look in the chamber. Thanks!

 

[jepp2]

I was thinking JB and chamber mop

So how do you clean it out of the back of the bolt carrier, behind the gas rings?

I would expect any carbon build up on the shoulder portion of the chamber to be fairly easy to remove. I find the Bore Tech Carbon Remover to be a very effective solvent at softening and removing carbon. Carbon deposits forward of the case mouth can be harder to remove since they get all the heat/flame from firing. But the shoulder area is sealed from this.

I use the Bore Tech Carbon remover to clean the area I mentioned first. I just puts some drops on a Q-Tip and rub it to get the area wet. I leave the Q-tip lying against it to keep it wetted. You be amazed at how black that cotton gets in just a few minutes. BUT, I keep my BCG very clean, so I don't have heavy deposits that should be scraped off before using the carbon remover. I don't know your cleaning practices.

 

[Steve Ladino]

I'm not sure I am posting this in the correct place and I'm sure that it might have been answered before but I haven't been able to find my exact question.
I was wondering if anyone had any suggestions as to the best method to remove carbon build up from the shoulder portion of a chamber (I was thinking JB and chamber mop?). It is on an AR that has pretty much only been shot suppressed and I thought I was getting clean until I took a good look in the chamber. Thanks!

Stab a 1 1/4 " patch with a 30 cal jag, add JB, and rotate in the chamber....it's a .223 right ?

 

[243winxb]

Buy an M16 chamber brush, use with solvent. The one in the middle.

 

[JMAC19]

Thanks for the responses. I tried with a chamber brush when first I first saw it but it didnt seem to do much to it. I just tried JB and kroil this evening on bore mop and I will try a 30 cal jag and patch. It seems to be helping. It is defiantly still covered in carbon but it looks smoother than it did. I guess it's just gonna take some elbow grease I'm just a little afraid to go to wild and hurt something.

 

[243winxb]

If there is no visiable sighs on the fired brass shoulder, i would not worry about it. Just do normal cleaning.

Photo of case shoulder?

 

[JMAC19]

That's a good point I will look at that next time I soot and no I don't all my 223 brass is mixed from different rifles.

 

[JMAC19]

I guess should have also asked in my initial question if anyone else had run into this issue before with a suppressed AR and if so is it really much of an issue. I'm not sure if it is due to my minimal use of brass chamber brushes (usually just hit it with a nylon chamber brush and chamber mop real quick), blowback in the chamber or a combination of the two.

 

[243winxb]

I watched a suppressed AR 5.56 being fired with factory ammo. The ejected brass i picked up was fully covered with soot.

Seems to be normal after reading this- https://www.hornady.com/support/superformance-in-gas-operated-firearms

An adjustable gas block may help some?

If ammo is handloaded, a different powder may help?

I have not owned a suppressed firearm, but find them interesting.

 

[tobnpr]

I've used Carb-Out on a stubborn carbon ring in the leade of a 6.5 Grendel that was tough as nails...good stuff

http://www.sharpshootr.com/carb-out/

 

[JMAC19]

I've used Carb-Out on a stubborn carbon ring in the leade of a 6.5 Grendel that was tough as nails...good stuff

http://www.sharpshootr.com/carb-out/

I'll have to give that a try. Thanks.

 

[6MMsteve]

I put J&B on a oversized brush and rotate by hand comes right out, maybe soak with some seafoam or some carbon cutter 1st then the JB brushing, then a good flush with patching

 

[Richard Coody]

C4 and losso for carbon ring. short stroke the chamber, throat and first 8 or 10 inches of bore. patch out all the abrasives. personally i like the parker hale jag with a patch wrapped around it.

scrape and ultrasonic for back of bolt