I think that the 243 is totally inadequate on anything bigger than a ground squirrel past 50 yards and the 7mm Rem Mag is gross overkill under 500 yards unless you're shooting at charging elephants or attack helicopters. I also think that if you hunt with a 243 you're an unethical slob hunter who's was unloved as a child, and if you use a 7mm Mag, you're an unskilled slob hunter that's trying to compensate for a small wiener.
Mike