I have a 7,62mm US cartridge with the green and white tip and the headstamp F A 63
which is just like the 30Cal M22 Frangible cartridge of WW2.

Anyone know what weapon or weapons were used with this 7,62mm Frangible cartridge?

The WW2 30 cal Frangible used a special device attached to the Browning m/g

photo shows both 7,62mm and 30cal Frangible cartridgesDSCN1962.jpg