The nominal bullet diameter of the 9x57 aka 9mm Mauser is 9.08 mm = .3575". Here in Germany American .358" bullets are used as is usually. The tiny difference of half a thousands inch does not matter, as it is well inside the old manufacturing tolerances. CIP max pressure is 2800 bar. Two pressure tested loads once recommended by the DEVA:
.358" 250 gr Speer or Hornady bullet,
46 gr IMR 4895 for 2200 fps at 2386 bar
47 gr VV N140 for 2200 fps at 2342 bar