I used to be a keen collector of both 303 & 7.9mm ammo in my teens & twenties & I never heard of let alone saw any 303 cases/rounds with head stamps suggestive of production under Third Reich control. I know they had the capability to do it, as Bruce & others have pointed out.......but DID they? Does anyone have a 303 round head stamped ch 42, aux 43 or similar, or even rounds with civvy head stamps in a wrapper or box suggesting they were produced in a factory in Germanyicon or under German occupation? They could exist but I've never seen any evidence of it up to now. In fact it would be fascinating to be shown one.