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Posted: 10/3/2007 11:08:40 PM EDT
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After hitting the range today, I was cleaning an old upper and noticed a number of weird spots or gouges in the muzzle-end of the bore, about an inch or so from the crown. I've always cleaned with a plastic-coated rod and been careful about it. I tried removing the "spots" by passing a brush a few times and then using a wet patch. It removed crud, but the spots are still untouched. There are a few spots, but one is exactly opposite the front sight post, the other is at about 4 O'clock if the front sight post is 12:00. What can cause this in a barrel? I haven't been rough with it at all. These little gouges would likely require quite the beating with a steel rod, as the barrel is chromed (stock Stag upper, bought new). Thanks. |
I've had the upper for a while, though. Seems a little late to call Stag. They were very good in replacing my improperly staked BCG. I don't doubt that they would do their best, I'm just trying to make sure that using a 1-piece plastic rod with nothing but bronze brushes and bronze patch jags could not cause something like this in a chrome lined bore. I'm not going to ask Stag to repair or replace anything if there's a possibility that I screwed it up. They're a straight-up company and I don't want to take advantage of them, if you know what I mean. FWIW, the barrel has, I would estimate, somewhere in the neighborhood of 2,000 rounds down the tube, perhaps a little more. No more than 3,000. |
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Ive seen this in brand new barrels, are you sure that it wasnt like that whwn you got it? Iv enotices minor pitting in random spots on some of my barrels, very small and usually only one or so, and just like yours an inch or so below the muzzle end. I wouldnt worry so much, I heard someone say once that you should never look down the bore with a magnifying glass because what youll see will drive you nuts. These are millitary grade weapons and I doubt your rod is the culprit. The bullets that get squezzed through that sucker would do more damage than a coated rod. |
If you only kept the chamber clean, the bolt and carrier and inside the upper well lubed, and shot the crap out of the gun you might not have ever known about this problem. You didnt say that this was some super sniper, shoot the hair off a gnats ass at 1000 yard type of gun, so Im guessing its just a service grade weapon? Why all the excess cleaning? |
I'm the type of guy who doesn't crap unless there's a shower nearby. I take care of my stuff.  I never considered cleaning the bore of a weapon excessive. |
I'm not entirely sure that it wasn't. I never really eyeraped the bore before. I gave a quick glance to see if it was shiny and that was that. This time, I was really focusing on crud because I'm going overseas on monday. I'm greasing up all of my guns for storage, and wanted them to be pristine when (hopefully) I come back, so like I said, I've been eyebanging them hardcore. I agree with you. I can't imagine a brass jag doing any kind of damage to a chrome-lined bore, but who knows. I hear horror stories on here about how you should "break in" your barrel (I don't do this), how you shouldn't use sectional rods, etc. As long as it's normal, I don't really care. I just don't want to be stuck with a FUBAR'ed bore. I'd pay for a new one, but if this is to be expected, and a replacement is likely to be the same, then fuhgeddabadit. Thanks for the input. |
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I saw something like that in a stainless barrel I have after the first time shooting. it looked like pitting across 2 of the land/grooves not longitudally. I thought "shit a new $400 barrel" but after a few Hrs of cleaning over and over it was gone. so clean the shit out of it.it may be just that. |
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