January 16th, 2013, 03:17 AM
Join Date: Nov 2012
Location: In the South
Norinco 7.62 NATO
I picked up two 520 round spam cans of Norinco 7.62x51 ammo in paper bundles just as S was hitting the F at the end of December for a nice price.
I have not yet fired it in either of my M14's (yeah, okay, an M14NM and M14SA, Armscorp and LRB respectively - purely Walt commercial). With that said, I understand the paper bundles were a military contract and are corrosive. Being a Mosin shooter, plus having a PSL-54c and Norinco NDM-86 Dragunov, I'm accustomed to cleaning corrosive primers and actually prefer them for storage because they last longer in storage as a general rule over non-corrosive primers (it is not uncommon for Mosin shooters to use 60 year old ammo without failures). This is not the China Sports boxed-ammo but the paper-bundles. Mea culpa: I have not tested the rounds for corrosive response to a metal surface so it is possible they are non-corrosive (the dealer was certain they were, and since they usually try to avoid telling you they are corrosive, I tend to believe him. He said his China Sports ammo was non-corrosive).
I have two questions on this matter:
First, the barrels are USGI, either Springfield or TRW, and are chrome-lined. I know about cleaning the gas port. Might there be anything else to consider after shooting corrosive ammo in this platform? The M1 Garand was a corrosive eater and it did just fine as long as it was cleaned, so I'm fine with that.
Second, how well does the Norinco copper-washed steel cases to in military barrels/chambers? I know the steel is mild steel with no real difference in hardness over the brass and I understand that brass flexes more, etc.
This is essentially academic at present as I still have a quantity of Radway Green and some 1970's OFV M80 ammo.