7,62x51 Electric Ignition

I like some info about these cartrides with electric Ignition
I don’t know nothing about these cartridges
headstamp 7,62x51 68 DAG

Thise cartridge is not out off the box, I did find this one at the last German show
It have a aluminium case and non magnetic bullet

Gyro, why “non metal bullet”?

Sorry EOD what I meen = (non magnetic)