I picked up a T3 lite in 300 WSM over the winter. So far I couldn't be happier. I was hoping it wouldn't shoot well so I could rebarrel right away but it's really decent with box ammo. The 180 grain Sako Hammerheads hold close to 5/8" groups. I'm just waiting on neck bushings then I'm ready to reload for this guy.
Only set back with the stock barrel for long range is it's twist rate. 1:11 might not work great for 205+ grain bullets.
I've got 200 grain ELD-X here to try and a bunch of brand new Hornady brass.
FWIW, I'd say recoil is closer to 7mm RM than the 300 WM