Hi There,
Sorry but I simply cannot see the sense in the 270 WSM, for a start a 22" barrel is not going to provide the best velocity, you need 24" and prefrably 26". There has also been feeding problems with that short fat case in rifles supposedly set up for the new cartridges from the factory.
The normal 270 Winchester, well never heard of a feeding problem and the old saw about long actions and long bolt throw is just cobblers IMHO

Nope I'll stick with the old 270 Winchester and know comfortably that it will get the job done and the cartridge will feed from the magazine like a hot knife through butter. If I want more punch down range for any reason then I will use a larger/more powerful (delete as appropriate ) calibre
Two of my 270's have 22" barrels the third which is the first rifle I ever brought has only a 20" barrel, it's a BSA CF2 Stutzen and I have never worked out just why they chambered this rifle in the 270 win cartridge when with such a short barrel it negates some of it's advantage. The short barrel would have been better chambered in 7x57 Mauser or 6.5x55 SE. Oh it's accurate enough but I found when reloading for it that Medium burning rate powders are best otherwise you get a big fireball from the muzzle from the unburnt powder buring as it exits

It's quite surprising just what a difference that 2" can make on a barrel