Brian, it should come as no real suprise...the 9.3x62 is essentially a stoutly loaded 35 Whelen and the 375 Ruger is basically a 375 H+H w/respect to recoil.
Believe me, there is a difference between the 35 Whelen and 375 H+H in rifles of equal weight...2 totally different animals (although neither is unbearable)!