One thing about loading them- with no or little data, you can use maximum loads for the .358 Winchester with same-weight bullets.
I am not talking about the .35 WINCH. or the .35 WHELEN - but the .358 Winchester on the .308 case. Beware.

You will find these loads are less than max. in ANY of the 9.3x57's. Velocities will be similar (usually less).