Something in the barrel

[bee12345-6]

I have cleaned my Glock17 Gen3 for several hours, but I can not get the barrel clean. I have used bronse brushes and several types of solvents. I have even left the barrel with bore foam over night. Something is not supposed to be there. This said, I have cleaned guns all my life, and never encountered this. Any idea on what causes the black residues and how to get rid of it? Is it normal, or is it some kind of damage to the barrel?

Please see link for picture: http://imgur.com/DBsQx4E

I bought the pistol new in 2009, and have always used good ammunition with jacked bullets ( at least the best ammunition we can get here in Norway - Ruag Ammotech match grade, also sold under the Geco brand, Rem umc, Fiocchi and Sellier & Bellot). The barrel is original and it has never been replaced. When cleaning, all patches comes out clean. I have never had any issues with the gun, just one jam in almost 4000 rounds, so there have been no bullets hammered out. Also, the gun is not stored with something touching the inside of the barrel. I have always been careful not to be near the barrel with anything than other than brass brushes and coated rods from Parker Hale or J Dewey. There is not just one "black spot" in the barrel, there are 3 more not showing on the picture. I will try to post some more pics later.

 

[JTQ]

I have cleaned my Glock17 Gen3 for several hours, but I can not get the barrel clean.

Here's Schuemann Barrels take on barrel cleaning http://www.schuemann.com/Portals/0/Documentation/Webfile_Barrel_Cleaning.pdf

My Personal Practice has become to never clean the bore of my barrels. I do use a brass rod to scrape the deposits out of the chamber. But, I've learned to leave the bore alone and it very slowly becomes shinier and cleaner all by itself. Years ago I occasionally scrubbed the bore with a brass bore brush. But, doing so always seemed to cause the bore to revert to a dirtier look with more shooting, so I eventually stopped ever putting anything down the bore except bullets...

 

[Zaydok Allen]

Welcome to the forum.

Deleted my comment as it was incorrect.

 

[LoneGoose]

The picture looks like that might be chattermarks from the rifling process that have finally shown themselves.

 

[Fishbed77]

deleted

 

[ny32182]

If it shoots straight, I wouldn't worry about it. Personally I put a Hoppes patch down it every few thousand rounds whether it needs it or not, and call it good. I have multiple barrels with 30k+ rounds through them that have never seen a brush of any kind.

Personally I'd be more worried about damage from putting any kind of metal rod/brush in there (even if it is brass) than I would be about removing every discoloration from the grooves. Once it is fired, it is never going to be perfectly "clean" again.

I shoot a mix of jacketed, plated, and polymer coated. If you are shooting bare lead and are getting excessive buildup, that might be a different story. But then I would address that issue by changing bullets.

 

[tcj]

If it were me I would leave it alone.

If you really want to get everything out get a bronze brush and a few strands of COPPER (make sure it is 100% copper) chore boy to wrap around the brush.

A few passes with this and your favorite cleaner will get everything and anything out.

 

[JohnKSa]

There won't be any chattering marks in a hammer forged barrel formed over a mandrel.

It doesn't look like a problem to me, but if it's really bothering you, get some RemClean and carefully follow the instructions on the bottle.

Seriously, read and follow the instructions on the bottle. If you just assume that you know how to use it and don't read the instructions, it won't do anything at all for you and you'll assume it's useless. If you read and follow the instructions, it will remove the black marks if they need to be removed and can be removed.

 

[RecoilRob]

Nice photography! Blew up the photo and could easily see that your 'something' looks like carbon with sharp flaky edges. The stuff can be VERY hard and diamond-like tough and resist cleaning with normal solvents.

In the automobile section you should be able to find some spray carburetor cleaner made specifically to dissolve carbon, and I'd give that a try if I was truly bothered by the deposit in that barrel. Then maybe hit the whole thing with a little JB Bore Paste and some work should bring up a nice bright shine...if that's what you want.

 

[jhb]

have you taken a tooth pick or a polymer pick and tried to see if it's on the barrel or actually in the barrel?