6.5 x 55, 7mm/08,.260,6.5 Rem Mag,, 7 x 57, 8 x 57, .35 Remington.270,,.308, and 30/06all come in at less recoil than the 7mm Rem Mag.

I listed them in order of felt and recoil energy and recoil velocity with the lightest listed first and the heavier listed last. The 30/06with 180 loads will recoil just atad more than the 7mmRem Mag in the 140 gr and/or 150 gr
The link below is where I stole my info and is very informative for anybody that may be recoil sensitive.
BTW, a good stock fit and recoil pad along with proper shooting form can do more to reduce your recoil woes than dropping down to marginal calibers.
That said, I'm a fan of light recoiling guns if they can do the job efficiently.

http://www.chuckhawks.com/recoil_table.htm
The #'s listed in this link all assume around a 8 lb. rifle