Can the 30-06 *really* do everything a 308 can?
What I mean to ask is this: Of course a -06 can be loaded down to 308 pressures and velocities. I've heard that the 30-06 really shines compared to the 308 when you go beyond 180gr bullets(not just velocities but accuracy as well), does it go the other way around with light bullets? What's the usual weight savings in bolt guns between long and short actions? I've long held that unless a 30-06 is marginal it was always better to go with the 308 because it was a short action that could be handloaded to match the L.A. 30-06.
Another question: would "about" the same amount of a given powder give the same velocity out of the two cartridges?