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ziconceo
01-07-2014, 12:27 AM
Came back from the range today and found this while cleaning my gun. Notice how it is blue. Ive never seen that before in my life with ANY ammo ever. Rounds I used were: 100 rounds of Winchester 5.56 55grain fmj.

Can anyone answer why the carbon deposit is blue? Thanks.

http://i1089.photobucket.com/albums/i348/ziconceo/Mobile%20Uploads/IMAG0322_zpsowlp0dvp.jpg

http://i1089.photobucket.com/albums/i348/ziconceo/Mobile%20Uploads/IMAG0320_zpscpdjcbvd.jpg

ZER0_
01-07-2014, 12:36 AM
copper deposit/fouling maybe?
Sorry that I'm not much help. I'm interested

ziconceo
01-07-2014, 12:45 AM
copper deposit/fouling maybe?
Sorry that I'm not much help. I'm interested

That's what I thought as well but since the rounds were factory ammo and non corrosive I don't see how that's possible. I'm thinking maybe Winchester has a special dyed powder for.....I really don't know ???

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SonofWWIIDI
01-07-2014, 12:53 AM
Weird. Was there any corrosion on the brass, did you recently change the type of solvent or lube that you use?

ziconceo
01-07-2014, 1:07 AM
I see some small blue dots in the brass but nothing else. I took those photos before I have ever cleaned the gun (Those were the rifles first 100 rounds) So solvent/cleaner is out of the question :/

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duckman1
01-07-2014, 6:41 AM
It's some sort of copper fouling. Just clean it and keep shooting, nothing to worry about.

gunwest
01-07-2014, 7:05 AM
Just keep an eye on it. Clean, shoot, inspect.

sierra m37
01-07-2014, 7:13 AM
I had that same color on the muzzle of an M1A when I first picked it up and after shooting a couple mags it disappeared. Wasnt that fouled on the crown, just that copper blue color on the first third to half of the muzzle. I'm just keeping an eye on it.

starsnuffer
01-07-2014, 7:37 AM
Did some idjit put loctite on your brake?

-W

760knox
01-07-2014, 7:42 AM
That happened to my AR after shooting some reloads, they were from Miwall.

Ruiner
01-07-2014, 7:43 AM
It's oxidized copper. A bit of copper from the jacket gets deposited there after firing and it turns blue when it oxidizes. Nothing to worry about. :cool:

raven290
01-07-2014, 8:19 AM
I had some of this on my AK's slant brake when I got it. I thought it was from shooting corrosive ammo, but the oxidized copper make sense to me. I generally take good care of my guns and clean them right away when I shoot them so I had never seen anything like that before. (Don't tell my clays shotgun, I haven't cleaned it in a while)

usmcspud
01-07-2014, 1:47 PM
oxidized copper.

AntiScreed
01-07-2014, 1:49 PM
Hoppes copper terminator handles it perfectly. Don't bother with ammonia.

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1Archie76
01-07-2014, 1:53 PM
Same things happened to my new upper after shooting it, I cleaned and lubed and it gone.

Calplinker
01-07-2014, 1:57 PM
It's oxidized copper. A bit of copper from the jacket gets deposited there after firing and it turns blue when it oxidizes. Nothing to worry about. :cool:

That's exactly what it is. Looks like a liquid. You said you discovered this while cleaning the rifle. Did your cleaner contain ammonia or any additives claming to work well removing copper fouling?

You were shooting FMJ which contains copper. This has nothing to do with shooting corrosive ammo.

Was there solvents left in your bore from the previous shooting? If you saw this before cleaning, this is the most likely culprit.

As Ruiner stated the blue color is oxidized copper. Regardless of how it became oxidized, that's what it is. Nothing to be concerned with and no, it's not dye from the rounds. :)

CrossedRifles
01-07-2014, 2:12 PM
I noticed I had blue-ish green material on my SureFire muzzle brake a year or two ago as well. It appeared as I was cleaning, after I put solvent on it. Went away eventually. Didn't know what it was until now.

drifts1
01-07-2014, 2:23 PM
Smurf piss ;)

Syds Grandpa
01-07-2014, 2:29 PM
You were to close to the last Zombie you dispatched.

Twystd1
01-07-2014, 4:48 PM
That's exactly what it is. Looks like a liquid. You said you discovered this while cleaning the rifle. Did your cleaner contain ammonia or any additives claming to work well removing copper fouling?

You were shooting FMJ which contains copper. This has nothing to do with shooting corrosive ammo.

Was there solvents left in your bore from the previous shooting? If you saw this before cleaning, this is the most likely culprit.

As Ruiner stated the blue color is oxidized copper. Regardless of how it became oxidized, that's what it is. Nothing to be concerned with and no, it's not dye from the rounds. :)


DEAD ON.

-T

BrassCase
01-07-2014, 6:06 PM
Do you use a brass cleaning rod?

BruinGuy
01-07-2014, 6:45 PM
Smurf piss ;)

I was going to say something similar but it would've likely got me a warning...