Thanks lancaster that's useful information and clears up one part of the mystery. I don't know why the powder had been removed, an avid firearms friend of mine gave it to me along with a range of other fully loaded European cartridges when I spent a year in Germany and brought them all back into NZ on my return. My friend emigrated to NZ and passed away here some years ago so sadly I can't ask him now about the origins of that cartridge and especially the bullet.