Just to throw my 2 cents, I have a 7mm rem mag savage, had a 7mm WSM
(browning A-Bolt) which is basically identical to the 270WSm and now I own a 300 WSM
in a browning X-bolt. As far as recoil goes, the 270WSM will kick similar to the 7mm mag and 7mm WSM if you have shot either. Of course it depends on what bullet weight and powder load you are shooting. All things being equal, the 300WSm will kick a little more in the same rifle with same type rounds/loads. However, I just bought a browning X-bolt....which has their "new" designed recoil pad and believe me it works wonders. It feels like it has the same if not less recoil than my 7mm rem mag savage and my 7mm WSM A-bolt I use to have.
Personally id go for the 300WSM all day long:
1.) it has more ammo diversity in factory loads. Giving you more options for accuracy testing and being able to go up higher grains for bigger game such as ELK or Moose...and even grizzlies but for grizzlies id go with a 338 or something like that.
2.) It will have more knock down power if you are comparing same bullets..... i.e. 300WSM 180grain will have more knockdown than a 180 grain 7mm WSM or 270wsm. due to a bigger diameter bullet "in theory"
3.) its bullet trajectory will not be "AS" flat as a 270 but close enough that you nor the deer will ever tell a difference.
AND if you can afford the X-Bolt...you WILL NOT notice the difference in recoil...especially if this is a hunting rifle and your adrenaline is pumping. Now if you arent shooting long ranges...I would highly consider just a regular 270 or 30.06. LOT less recoil than magnums, and they have TONS of ammo options including much cheaper.