sks ejecting very dirty brass

[u/Spiritual_Rope_6952]

i have a chinese sks, cosmoline all cleaned up, but when i shoot it (norinco non-corrosive) the cartridges come out all dirty with some kind of soot all over them. is that normal? otherwise it works perfectly and ive never had a jam. ive just never seen a semi auto ejecting brass so dirty before

[u/Receedus]

Bro the ammo you are feeding it is dirty as it should be. Clean your bore and you will see how many patches it takes until they come out clean. This is normal.