I like your answer Woolecox, but I've seen too many young hunters buy a magnum that they can't control. Blowing off a front leg doesn't kill an elk cleanly. I shoot a lightly loaded 7mm WSM
for elk, but I shoot my 7-30 Waters much better. Most hunters on this forum can probably handle some recoil, but there's a reason bench rest shooters are moving to 6 and 6.5 mm guns. Recoil adds up.
Today's copper and bonded bullets are much better than the ones we could buy when I was young. That makes a smaller caliber more effective, because of the retained weight and controlled expansion.