GorV,
If I had to choose between the three calibers you mentioned, I would go with the 300 Win. mag. The Weatherby is a fine round but is expensive if you don't handload and ammo is not as available as the 300 win mag. I own all three calibers and like them all but, anyone who says there's no difference in felt recoil between a 300 Weatherby and a 300 Win mag hasn't shot it much. The Weatherby seperates the mild recoiling rifles from the big thumpers. Mine is a wooden stocked version and it will get your attention. the 300 win is a fine cartridge, ammo is readily available, and the recoil is certainly not harsh. Good luck!