Might you have a 9x72R and not a 9.3x72R.

If the Barrel is stamped 8,7That is the German proofing (Bore) Calibre Marking for a Rifle Nominal Barrel in 9mm,

The Lyman 358318 mould is what you want

http://www.mattsbullets.com/index.php?ma...5tj3d0ondhisp42

The Lyman 358009 mould would do just fine

http://www.westernbullet.com/ly3gr25.html

Mike