Paper patched 0.358" cast bullets work well in 9.3mm rifles. I roll a 245gr. Saeco bullet in tracing paper to 0.368" and load it with IMR 4064 powder for my 9.3x74R Ruger. I have killed a number of large hogs with them. For more information on paper patched cast bullets, check the Cast Boollit web site.
castboolits.gunloads.com