In a short action the only choice here is a 308. In a long action, there seems about no reason on earth not to choose the 30-06 instead of the 8x57.
But if you happen to luck into one of those cool "intermediate" actions, the 8x57 is the perfect big game cartridge for big pigs and big deer. Loaded to potential ie equal pressures its going to outstrip the 308 in equal bullet weights easily.
A 195g Hornady Interlock at a lazy 2600fps will have most big game snoozing quickly.
