I see no advantage of the Weatherby over a Win Mag. You can get ammo about anywhere for the win mag if things go bad. Long seated reloads seem to perform pretty dang good. A Weatherby isn't worth the bother.

“You never need fear a man, no matter what his size. When danger threatens, call on me, and I will equalize.”
Samuel Colt.

�Common sense is genius dressed up in work clothes.� - Ralph Waldo Emerson