Generally, the WSM's kick less than their belted counterparts - if you are comparing apples to apples. The reason, at least in theory, is that although both send the same weight bullet down the barrel at about the same speed - the short mags do it with less powder - and are at a lower point on the pressure curve when the bullet breaks its seal at the muzzle. So . . . . the jet engine effect of the powder gasses driving the gun back into your shoulder is less. This is the part of the recoil equation that muzzles brakes mitigate as well.