I consider the extra 100 fps. the 300 Weatherby provides over the 300 Win. Mag. to be completely unnecessary, and the 300 Weatherby isn't as available or as shootable, either. You also have to deal with throating issues with the 300 Wby.
The 300 Win. Mag. will do all that the 300 Wby. will do, with none of the drawbacks, plus it brings to the table some real advantages of its own, including a wide availability of high-quality ammo and brass, significantly less noise and recoil, world-wide ammo availability, and I'm convinced greater inherent accuracy. Since 1963, 85% or so of the 1,000 yd. Wimbleton winners have used the 300 Win. Mag., which speaks volumns. You can also get by very nicely with a handy 24" bbl with the 300 Win. Mag. and still get 3100 fps. with 180s, but you really need a 26 on a 300 Wby. to get the most out of it.
I've literally shot the gamut with a 300 Win. Mag. over the years and have largely filled a trophy room with it, including everything from Texas whitetails to African Cape buffalo, and from point-blank out past 500 yds. To this day I fail to see that another 100 fps. from a 300 Wby. would have added anything practical whatsoever in the way of performance.
Mostly it would have added a burden......... <img src="/ubbthreads/images/graemlins/wink.gif" alt="" />
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