The comparison between these two is essentially the same as the comparison of any 7mm and .30 caliber rounds that have similar case capacities. The .30 will always shoot heavier, larger diameter bullets at equal or slightly higher velocities. Consequently, the .30 will always be a little more powerful at all ranges, provided the .30 is used with bullets of equal or higher ballistic coefficient. (This is not always the case, either!!) The .30's will also always have more recoil than the 7mm's at similar velocity levels. The question is, does shooting deer at 400 yards require the extra margin of the .30 magnum vs a 7mm? Answer. NO. But, if shooting elk, moose, or bigger bears, then the nod goes to the .30!! Good luck!!

Keep yore powder dry!!