I use 9mm Makarov bullets for my light loads in my 9.3x74. They are usually .365. I get pretty good accuracy (2") out to 25 yards, but don't expect them to regulate. I use magnum primers and small charges of Unique powder to almost 1000 fps. They worked in my drilling and I still use them in my Chapuis. I suspect the Gamegetter would give better accuracy and be safer. There is a bit of danger messing around with small charges in big cases.
Bfly