Had to look this up - its the Italian military cartridge through WW2. I can't find pressure info on the loads and there's only a brief reference to "low pressure" in Barnes' semi-useful COTW book. Velocity is listed by Hodgdon as anywhere between 1800-2400. Chuckhawks briefly mentions "designed for 40,000 PSI" but doesn't clarify max pressures. I found only one other reference that alludes to "German proofshooting" pressure to be 60,000 PSI. Which means nothing to us... but it is probably slightly lower pressure than .308 if the proof pressure is 60,000.
Looks like you could fit that into a .308 mag. If the pressure is relatively tame then I don't see why not!