I picked up 800 rounds of 7.62 NATO (four heavy poly bags of 200) but found that they had no headstamps on them. There is a green seal around the primer and the primer has the typical 3 crimp military primer but no headstamp or markings.

Has anybody used or seen this stuff before?

thanks,
Ron

I bought 2,000 rounds of the same thing from Century over 6++ years ago. It was advertised as Venezuelan, and I have shot 1600 rounds to date wth no problems whatsoever (I still have two sealed bags left). it came 200 rounds to the bag, 5 bags to the cardboard shipping box.
It is, in my experience, decent, clean, GI accurate ammo. I tell the brass rats at the range it's CIA ammo when they ask about the lack of headstamp lol.
Did uou find ot from a distributor? I wouldn't mind some more if it's cheap enough.

I bought the last 4 bags that the store had. He told me that it was Venezualan but I thought that he made a mistake because I bought the last of Cavim from his as well. I thought that Venezualan he was talking about was the 1300 rounds of Cavim that I bought from him as well.

Once I got home and started putting the ammo away I started to have second thoughts if I should have bought it. No headstamp and poly bag packagins; there's no way I would know if this stuff was hot, light. dirty or dangerous (Indian).....  Thanks for putting me at ease

thanks,
Ron

It's called 'sterile' ammo for plausible deniability purposes.  Most US 'sterile' ammo has headstamps that really don't mean anything.