bls,
You can tell which 9.3 it is, pretty easily.The 72R is close to 30-30 head size, although rim dia of 30-30 is a little larger. The 74R is close to the 30-06 headsize( just a little smaller, but a 06 case will usually go in( try it head first). With a 30-30 and 30-06 case, you can figure it out.BTW Buchsemann is correct that you can use the Brenneke in any choke avaliable.The 9,3x72R is about like 38-55 to 35 Rem. A lot of deer have fallen to both of them.
Mike

Last edited by Der Ami; 05/03/15 07:34 PM.