Norinco 7.62x51

[Mopar15]

Hey there this is my first post and im not sure if this is in the right place but i bought some Norinco non-corrosive 7.62x51 to feed my Norinco M305 and it leaves this orange residue on the bolt and the chamber, i was wondering if this is normal, it looks kinda like its shaving the copper of the cases.

https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-xpf1/v/t34.0-12/10808304_10205481097172779_836628793_n.jpg?oh=82bb6c3898ffdbbce740ad826507e695&oe=546BA038&__gda__=1416315404_252a6f3271eaff49d5d8092d28012a25

https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-xpf1/v/t34.0-12/10811737_10205481097092777_1822844091_n.jpg?oh=60881619413e8e2afd8872ebd244babd&oe=546BB49E&__gda__=1416392655_46be3491343c52a0d5d629a4d8c14c75

https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-xpf1/v/t34.0-12/10807988_10205481096812770_1163913524_n.jpg?oh=b5c5a56baf4f84cf9ad673a21e103005&oe=546C8551&__gda__=1416315712_9d5730481ea93028a21eb84a429362b4

https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-xpf1/v/t34.0-12/10721010_10205481096532763_147882423_n.jpg?oh=4c09d1aa07209256bf6a26a9ce9136b9&oe=546C78DC&__gda__=1416316072_5a4d9e0840d2446b0ecc2a197c201f02

Thank You

 

[eXodus31337]

The case is made of steel and is washed with copper. This could be copper residues scraped off the case when it gets cycled.

 

[canucklehead]

The ammo is copper washed. It will leave a residue. Not harmful or unique. Clean as normal. IMHO its good consistent blasting ammo.

 

[Mopar15]

Thanks guys, i was pretty sure but just wanted to make sure. Yeah the ammo has been flawless so far.

 

[LUTNIT]

If you want to get rid of the copper residue you can use any bore cleaner meant to remove copper fouling. I use butches bore shine copper remover outside (because of the smell) or if I have to do it inside, Hoppes benchrest copper fouling remover (slower but far less smell). The active ingredient that dissolves copper is ammonia so there will be at least some smell from it.

The M305 seems prone to this. The one I had I only ran brass cases through and had yellow colouration on the same areas. I sold it to my friend who shoots Norc ammo in it and it switched to brown/orange just like yours. Leaving it there wont hurt the rifle.

I've heard of people using Windex but it wont work for the same reason it doesn't do anything water can't for corrosive ammo residue; there isn't enough ammonia. Windex was 5% ammonia in 1989 but after that switched to 0.05% of a 28% ammonia solution ever since. So the ammonia content is closer to 0.014% actual ammonia.

 

[saskcop]

It is actually very good ammunition. It may not be the most accurate in the world, but it is very good blasting ammo. Some folks have said that it really smells when you shoot it, but who knows what kind of corruption for gunpowder the chinese use for this stuff. All I know is that it goes bang everytime I pull the trigger. The orangish crap you are seeing is easily cleaned by a normal cleaning of your rifle. No worries.