I seriously think that all the hype put out by Winchester and gun writers has definately had an effect on the brainwashing of modern rifleman.
Has the 300WinMag been replaced on the 1000yrd line by the 300WSM, I think not, not where I shoot anyway.
If the hype regarding a shorter, fatter case being more accurate than a belted case, then why does the 300WinMag give bench rest like groups in a well tuned rifle?
If it was so inaccurate that it had to be replaced by another, why hasn't the replacement shown up in the record books?
The 300WSM, even overloaded, will not match the velocity of my 300WinMag with 200gr bullets, nor the accuracy and trajectory.
I can, and do get just under 3100fps with Nosler 200gr Accubonds, do that with your 300WSM!
It may well be that the 300WSM burns powder more efficiently, but cubic inches is where you get velocity from, not efficiency. The 222 Remington is a very efficient cartridge, but no matter how efficient it is, it will never match the 223 for speed, even though accuracy is often better in the 222, but neither will match the 22-250 for speed, and the accuracy in a tuned rifle is often matched with the 222Rem.
HYPE just makes you feel all warm and fuzzy on the inside, until you get into the real world and discover it to be just that, HYPE!
As for 'magical', what exactly is 'magical' about the 300WSM?