I own 2 300 WBYs one in a Vanguard and one in Mark V. I have shot the crap out the Vanguard. I also have the 300 WSM and I just don't like the cartridge. The Roy will give you an honest 3200 fps with the 180s and I don't find the recoil bad at all. I'll burn 2 or 3 boxes a session and I'm not sore after it. I have used a lot of the Remington brass and have gotten several loadings out of it, so brass cost is not that much different. Loading 80 grains + will eat a pound of powder quick! You can always load the WBY down to the WSM but can't load the WSM up to the Weatherby! I say go for it and get the real 300 magnum performance.
