Jtplumb,
Go up two forums to the thread "H. Scherping 9.3x72R", a lot of discussion about bullets. Groove diameter is important. If it will chamber, the S&B factory ammo will work well. If it won't chamber, maybe we can advise on that. The S&B ammo uses the TESCO type bullet mentioned in that thread. It is useable in barrels with different groove diameters and will expand at the factory velocity. The reason there are so many 9.3x72Rs are around, is they were very popular in their day. They wouldn't have been popular if they didn't work well for the conditions they were used in.
Mike