Thread: Powder residue around crown.

Anyone else get powder residue build up around the muzzle when shooting with a suppressor? If so how do you get it off? I've tried cleaning pads with solvent but the best way seems to be a wire brush and worried about damaging the crown?



Any suggestions?

CLR works great.

Pretty sure its carbon, decent carbon remover will sort it, then just give it a wipe after each use and store with suppressor off

Solvent and a Scotch Brite pad should sort it. And clean it whenever you do the bore.

Put some carbon clean liquid in a small container..invert rifle and put end of barrel in liquid overnight and it will just wipe off...do not use a wire brush or any type of scouring pad...

Suppressors and to lesser extent brakes will cause high levels of carbon fouling. Any good Carbon solvent will take it off, I use Hoppes and always let it soak in (barrel & crown). But the build up shown here may take quite a few repeats and soaks to get it clean. I'd also be wary given the large build up that the bore is also not suffering. Have you run a bronze brush thru the bore ? (as well as solvent and patches)

That's only from 15 shots of load development to cause that using reloader 26 and reloader 23. Always stored with the suppressor off but every time I use the rifle I get the same build up pretty quickly.

Originally Posted by Pommy

CLR works great.

What Pom said, did mine the other day, dab some of a cloth and wipe it.

I had a coating that didnt come off with wiping with hoppes but after a 2 hr session soaking and brushing for copper I looked back and it was gone. Probably just a matter of leaving the #9 or eliminator on there for 2 hr.

Originally Posted by Nick.m

That's only from 15 shots of load development to cause that using reloader 26 and reloader 23. Always stored with the suppressor off but every time I use the rifle I get the same build up pretty quickly.

Yip that's pretty normal I clean the carbon out of my barrel after each use and use the first patch to wipe the end of the barrel it's gone in seconds.


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Just a thought: is it essential to remove that build-up?

IE does it affect accuracy and/or performance?

2217 and 2225 give similar outcome with suppressor fitted

Originally Posted by Finnwolf

Just a thought: is it essential to remove that build-up?

IE does it affect accuracy and/or performance?

I don't believe it has any bearing, my 223s crown is black, every time I take the supressor off after use I wipe it with a rag over my thumb.
I think you are more likely to damage the crown scrubbing at what is really only a cosmetic appearence thingy. The velocity and pressure of gas at that point would unsure that there was never any build up that could affect accuracy. Now keeping the threads n the barrel and supressor clean and lubricated that's important really important.

Yep. CLR is the ticket. Apply some with a cotton bud, and you’ll be amazed at how it bubbles then wipes straight off. Lifechanging!

Originally Posted by Finnwolf

Just a thought: is it essential to remove that build-up?

IE does it affect accuracy and/or performance?

No