From Sierra'

338 Win Mag. 250 grain bullet 4033 ME. 2700 FPS 33.1 lb recoil.

35 Whelen 225 grain bullet 3375 ME 2700 fps 22.6 lb recoil.

The 35 Whelen may not be a 338 Win Mag but for all NA game, it stacks up pretty well with 2/3 of the recoil. For a cartridge that came out in the early 1920's and used the plentiful 30-06 surplus brass, its doing well. Talk about tried and true.