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Old 02-20-2010, 12:29 AM
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Default removing copper fouling from barrel

I just bought this M&P 9 new and it seems, to have some copper in the bore. I used Hoppe's and let it soak a few minutes and the patches came out with a bluish tint. The user manual says not, to use ammonia solvents which I have some Barne's CR10 I use on my rifles. will this be too harsh of a solvent to use? so far all I have used is a Patch Worm and patches haven't gotten a proper kit for it yet. Should I just use a brush and Hoppe's and scrub it real good maybe? I'm new to pistols so I'm kind of lost here. Thanks!
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Old 02-20-2010, 02:39 AM
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I'm no expert but scrubbing the barrel with a brush in the caliber of your pistol can help remove deposits.
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Old 02-20-2010, 05:13 AM
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Hi, and welcome! I would stop by your local shop and look specifically for a non-ammonia based bore cleaner, preferably in an aerosol form since I am lazy
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Old 02-20-2010, 08:56 AM
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Try a product called "Sweets". It has a strong ammonia smell. Swab it into the barrel, let it stay for 10 minutes, then patch it out and follow up with Hoppes. Copper will be gone, and the patch will turn blue. I use it on all my guns. Follow the directions on the bottle. No brushing or scrubbing is required.
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Old 02-20-2010, 09:02 AM
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I like Gunslick Foaming Bore Cleaner. No ammonia, just spray some foam into the barrel, let it sit for a little while, run some patches through and your good. Works well enough for me.
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Old 02-20-2010, 09:13 AM
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Quote:
Originally Posted by p5200 View Post
The user manual says not, to use ammonia solvents which I have some Barne's CR10 I use on my rifles...
Some of S&W's finishes can be damaged by solvents. I wouldn't be afraid to disassemble the gun and clean the inside of the stainless steel barrel with CR10 or any other solvent, just keep it off the finish.
FWIW, I let Hoppe's soak overnight.
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Old 02-20-2010, 10:02 AM
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I have some Gunslick foaming bore cleaner as well, as the Barne's CR10 so I'll try the foamer first since it has no ammonia. There really shouldn't be that much copper foul in a new gun barrel at least, I wouldn't think so. so it seems it should come out easily with either, of the copper remover solvents. Thanks very much for all the great help!
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Old 02-22-2010, 07:09 PM
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Gunslick Foaming Bore Cleaner
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Old 02-22-2010, 07:21 PM
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I bought some Wipeout Brushless Borecleaner (it's a foam) from Brownells after recommendations from guys on a Savage 99 forum.
Used it on a Sav 99 (of course) that had been sitting for @ 10 years.
Let it sit over night and it worked great--comes out in the morning with just patches and not a brush.
Takes all kinds of powder crud out of the chamber too.

Won't harm blue at all is the best part--won't ever hesitate to use it on some of my classics (Smith 52-2) and antiques after using it on the 99

Best thing is the more I used it (as I started shooting the gun some more) it helped reduce the amount of copper fouling buildup in the first place over subsequent shooting sessions.
Finally traded the gun in and had the gunshop say he was impressed and wished every customer knew how to clean a gun like this one was

Last edited by 7cstevan; 02-22-2010 at 07:24 PM.
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Old 02-22-2010, 08:38 PM
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KG-12 Copper Solvent.

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Old 02-22-2010, 11:07 PM
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Quote:
Originally Posted by p5200 View Post
I just bought this M&P 9 new and it seems, to have some copper in the bore. I used Hoppe's and let it soak a few minutes and the patches came out with a bluish tint. The user manual says not, to use ammonia solvents which I have some Barne's CR10 I use on my rifles. will this be too harsh of a solvent to use? so far all I have used is a Patch Worm and patches haven't gotten a proper kit for it yet. Should I just use a brush and Hoppe's and scrub it real good maybe? I'm new to pistols so I'm kind of lost here. Thanks!
If the owner's manual indicates that you should not use any cleaners with ammonia I guess I would have to question the manufacturer as to why. What the hell did they make the barrel out of - plastic? Traditional barrel steel is either carbon or stainless. I have never hurt any of my match grades rifle barrels using Sweets. Over they years I have found that if a barrel is heavily copper fouled only ammonia based solution will take the copper out. Be advised, however, that strong solvents like Sweets can only be left in the barrel for a short period of time (follow the directions) or it can actually etch the bore. I definately would not use a stainless brush especially in a carbon steel barrel. You are probably best to patch the barrel with the solvant and if scrubing is necessary use a nylon brush. The solvant will eat a bronze brush. Good luck.
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Old 02-22-2010, 11:36 PM
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Yeah, I have used the Barnes CR10 when needed on my rifles and just couldn't understand why, they would say not to use it on their pistols. Thanks!
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Old 02-23-2010, 12:52 AM
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Quote:
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Yeah, I have used the Barnes CR10 when needed on my rifles and just couldn't understand why, they would say not to use it on their pistols. Thanks!
Give them a call and inquire as to why
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Old 02-23-2010, 02:13 PM
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I can only assume Smith & Wesson's warning against the use of ammonia based products would be in regard to the polymer frame. So if you remove the barrel from the slide there should be no problems with using a copper remover in the barrel.
I use the Shooters Choice Copper Remover
Copper Remover for Guns
It can be found at Midway USA, Brownells etc.
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Old 02-23-2010, 03:48 PM
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Yeah, that's the only way I would do it is with the barrel removed. I've seen some stuff called KG-12 I think, was the name which is suppose to be so aggressive that it will actually eat up a penny.
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Old 02-23-2010, 04:11 PM
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Yep, KG-12.

https://www.kgcoatings.com/index.php...od&productId=9

Bruce
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