.300 WSM is a clear winner and here to stay IMO.
150gr @3300 fps
in a 23-24" barrel that's a lot of gun in a handy package imo.
seems like there's quite a few guys that like the .270wsm as well, but to me I'd rather have the 300 w/150g around 3300fps than the 270, more popular more versatility imo.
I see some loads out there as well in the 200grs weight, high BC etc... but to me maybe if I had that particular need maybe I'd consider those, but to me the 150-165gr weights is where it shines.
speaking of dead short mags?
have you seen the 6.5 PRC? it's brand new! kind of, and I'd certainly rather have that than the 6.5 creed I'm pretty certain.
pretty certain the 6.5 PRC is based on the ruger compact magnum case too btw! RCM.
I could see a 7mm PRC being a great kinda short mag option coming down the pike as well. basically a 280ai or more performance in a short action...
also not a short mag, but weatherby's 6.5RPM I think in 7mm would be another .280ai but with even more performance.
I'm not sure of the fate of the 6.5 PRC,
but if you're considering a short mag, I'd strongly say the .300wsm is the one to get! and shoot 150/165gr bullets,if you need more magnum than that....then you're looking a full length mags that can shoot 180-250grs ...