The headstamp is A 76 7.62 R1.M1. I believe it is a riot load; who made it?
As there is no photo, I suppose that you mean the 7,62 NATO short range loaded with the SFM 'Balplast’ ? The French patent for this projectile had been sold to So. Africa before the embargo…
normally it a short range training projectiles
but some countries use them a riot control bullets ,even they were lethal at short range