In addition to the 7.62x39 ammo that I inherited, I also inherited a ton of other ammo (ok, just several hundred pounds). Some of it is 7.62x51 ammo that appears to be Radway Green, but I'm positive isn't. It has the RG headstamp, but it comes in 300rd spam cans, it is steel case, and the bullet also attracts a magnet (steel core or jacket, I don't know).
From what I can find, I think it's Chinese (most likely Norinco), which means it probably has corrosive primers, but other than that, I'm looking for more info on it.
The 2nd item in our showcase tonight is more spam cans: this one I know is .30carbine, as I have an opened one that is filled with 50rd boxes of it, marked "7.62MMLC". I managed to pull one apart and noticed that it is berdan primed. It is brass cased, but the bullet sticks to a magnet. I can't tell if the jacket is copper or copper wash. It's pretty thick, so I wonder if this is copper jacket over a steel core. The headstamp: LC 52. I seriously doubt that this stuff is actual Lake City ammo, though. I'm thinking fake Chinese stuff, but I don't know for certain.