A few observations from my t3 300 wsm-

1) at <8# it was hard on scopes & stocks- recoil broke a zeiss conquest & tore the swivel stud out of the factory stock- running hot loads, of course....
2) loaded near max at factory magazine length I get 2950 fps from a 208 amax. It doesn't inspire me to load longer coals just yet.
3) with the thumbhole tactical stock & a muzzle break (closer to 10# now) it's much more enjoyable to shoot & therefore I'm more consistent with it.

Overall, I will most likely try our aics compatible bottom metal when it's ready- to run longer coal, but I won't go with the short action & alpha mags for the 300. That setup runs great on my 7saum & 180 grain berger hybrids, but I'll need more than alpha's 2.96″ max coal for the 300. I've talked with guys who have had great success with coal in the 3.15″ neighborhood on their 300wsm's.

The only one I've spent any time with is the long range hunter. It was super comfy & reasonably accurate for sure. Whichever you choose, they benefit greatly from bedding.