I have run across some Portugese 200rd battlepaks, they are in brown vinyl battle paks and they are stamped       ---                                              7.62 x 39    200rd    
                                     portugel   1995
                                     lot----
the actual ammo is brass cases with very sharp pointed fmj bullets, and the headstamp is
7.62 39       95              with   greenish-blue sealant around the fmj and primers

It was crap to me, shot double the groups Wolf or Silver Bear would have. And It's not corrosive, shot it a month ago and no rush yet.