No the WSMs do not out-perform 7mm Rem Mag and the 300 Win Mag. Its all a load of crap. The 270 WSM is faster than the 270 Win, but not as fast as the 270 Weatherby Mag.

BeltedMag, show me evidence in the field that the 7mm has so much more penetrative power than the 308 bullet. Dead deer tell no tales.

Having said that I will admit that since I got my 7mm-08 Rem that my 300 Win Mag has seen no action. I really don't need that much punch for deer.