7.62 mm OFV 97 Mk 80 Headstamp

Anyone out there know the specs on OFV 97 Mk 80 7.62x51mm ?
Also the country of origin?

Not sure of the specs, but it's Indian, and good reloadable ammo.

Thanks Jonnyc, I'm puzzled as to why it's not shown on any of the listings of headstamps. I wish I could find some more, it is pretty good stuff.

Try: International Ammunition Association