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Posted: 9/1/2007 9:53:18 AM EDT
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There was a lot of carbon deposits on the crown of the Glock barrel which came off with some scrubbing and BF CLP. I too suspect it is metallic fouling but its almost impervious to brushing. Where can I find the BF Foaming Bore cleaner locally? I found it online but I'll have to buy it along with a bunch of other stuff to justify the shipping. |
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I would just try and track down some BF FBC and see how it works. Do you have a Sportsman Warehouse near you? Or any of the larger sporting goods stores? www.break-free.com/?location=/global/dealer.asp |
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I scrubbed it using Barne's CR-10 and I didn't see one speck of blue come out of the bore. I previously used brake cleaner, BF CLP, and lots of scrubbing with a bronze brush. Carbon shouldn't be this hard to remove, and lead is soft enough to start coming apart when scraped or brushed. What else could it be? |
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Any possibility that the discoloration your seeing if either surface wear in the barrel or bronze/brass being deposited from your cleaning brush. As another poster stated CLP does next to nothing for stubborn metal deposits. Honestly (at the risk of being burned at the stake) I am not a big CLP fan. It's great to throw in a range bag or use in the field. But the product was designed to clean, lubricate, and protect. Granted it does all three. But no one particularly well. I would try some Blue Wonder, Hoppe's # 9 or Flitz. Also the ammo you were refering to was steel cased, not jacketed. Steel cartridge cases would have little to nothing to do with barrel fouling. A steel jacketed bullet would destroy your barrel's rifling. The reason they use lead, copper, and brass almost exclusively is because those materials are softer than your barrel and will not damage it. This is the same reason a brass/bronze brush will deposit itself all over you GLOCK's hard tennifer coated barrel. Same reason that the shell deflector on an AR-15 gets brass colored after a couple hundred rounds. Hope that helps. |
I so hate to be a smartass . . . but, didn't you know Glock has been putting a camo finish INSIDE their barrels, for years?!?  Seriously, tho . . . have you tried scraping it with anything? You know . . . toward the end of the barrel - where you can get to it easily? I've never seen anything like that. Hmmm . . . curious, indeed. |
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It looks to me like you stil have a lot of copper on the lands, at least from the way the color appears in your image. The lighter colored areas to where the arrows point look like either scratches, etching, or lead. Hard to tell. But, I agree with what has been said. Try a foaming bore cleaner--they work! |
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It's a 9mm Luger Glock 17 with the original factory barrel. So far it has shot: Winchester 115 gr FMJ Winchester 115 gr JHP Winchester 124 gr JHP Winchester 147 gr JHP Brown Bear 115 gr FMJ (Steel cased AND steel jacketed) Wolf 115 gr FMJ (Steel cased, copper jacketed) |
| I have seen the same stuff in my other barrels (16" or longer) so it'd be hard to soak in a jar of Hoppes. I did a LOT of rapid firing with this Glock barrel and I've read that it might be remotely possible that its hardened carbon. I agree that regular carbon would have just brushed right off. |
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