I shoot a Weatherby ultralight in 338-06 A-square and it has less recoil than a remington 700 bdl in 30-06. Forget 400-500 yard shots, you better put your flame suit on if you're gonna talk like that here.
Here is a recoil calculator that calculates actual recoil in pounds, so you are comparing apples to apples.
http://www.huntamerica.com/recoil_calculator/