The WSM's don't work very well on a SA, unless you're shooting ammo to SAAMI specs. And then you won't be able to get the most out of it.Get the 300 WSM! Benefit of a short action and no belt!
Having owned several 7 STWs, and 7 RUMS plus several 300 Win mags and 300 RUMs I would choose the 300 win mag.
Brass is more available. Barrel life will be longer than the STW. The heavy Berger 215 and 230 have higher BCs. Sure the STW can shoot flatter with a light bullet. Wind drift and retained energy are what matters for long range hunting. The 180 launched from a 7 STW is pretty good but IMO the big 308 bullets are better. More recoil may an issue but it is still manageable with out a brake.
Broz's experiences with the 215 hybrid and the 300 Win mag says it all:
I linked the middle of the thread where the field results begin. Hard to argue with this kind of success.
http://www.longrangehunting.com/forums/f19/comparing-berger-210-vld-215-hybrid-88657/index12.html
Right now you can get some great brass for the 300 win mag. STW brass? Have no idea where to find any.
Norma brass:
Norma Reloading Brass 300 Winchester Mag
RWS brass:
Huntington Die Specialties :: Cases :: RWS Cases :: 300 Win. Mag | RWS
Midway USA has Nosler ammo, brass, and everything in stock for the STW...Having owned several 7 STWs, and 7 RUMS plus several 300 Win mags and 300 RUMs I would choose the 300 win mag.
Brass is more available. Barrel life will be longer than the STW. The heavy Berger 215 and 230 have higher BCs. Sure the STW can shoot flatter with a light bullet. Wind drift and retained energy are what matters for long range hunting. The 180 launched from a 7 STW is pretty good but IMO the big 308 bullets are better. More recoil may an issue but it is still manageable with out a brake.
Broz's experiences with the 215 hybrid and the 300 Win mag says it all:
I linked the middle of the thread where the field results begin. Hard to argue with this kind of success.
http://www.longrangehunting.com/forums/f19/comparing-berger-210-vld-215-hybrid-88657/index12.html
Right now you can get some great brass for the 300 win mag. STW brass? Have no idea where to find any.
Norma brass:
Norma Reloading Brass 300 Winchester Mag
RWS brass:
Huntington Die Specialties :: Cases :: RWS Cases :: 300 Win. Mag | RWS