Look, this stuff is our hobby. Do what makes you happy and you have the most fun doing. If you really want the Weatherby buy it.

That being said there's no good logical reason to do it. You're trying to trade a more expensive gun for a cheaper one - you'll loose money on the deal.
Both guns shoot the same bullets, the Weatherby just shoots them 200fps faster (maybe only 125-150fps if you use RL-17 in the WSM). This means what? That ta bullet from the Weatherby hits with the same energy at 150 yds that the WSM hits it at 100? Maybe a 1/4" difference in drop? There's not much a difference in results but the Weatherby burns a lot more powder in a much heavier rifle to do it.
I have a couple 300 Weatherby's, they are nice guns and one of mine especially shoots very well. But it's just not a whole lot more gun than a 300 WSM in the field.

But like I said do what makes you happy. Logic and practicality shouldn't interfere with a true Gun nuts decisions! smile .......................DJ


Remember this is all supposed to be for fun.......................