I agree, if one considers the 600NE a good choice for elephant then the Ok could be loaded down. The 600 doubles run, what? 15-16 pounds? I dont think either field or ballistic requirements to kill an elephant was part of the design consideration for the Ok. Although, I maybe wrong in which case it appears the muzzle brake was a key ingredient to make the gun manageable.

It seems to me, starting with the CZ550 magnum action and blank sheet of paper one might have found a sweet spot to take best advantage of the action, magazine capacity and still satisfy extreme BIG bore hunting desires. Good engineering tries to balance all the variables for the best outcome, not just push one parameter to the limit. A little compromise here and there might result in a staggered magazine, a manageable weight without a brake, little or no rebate rim. Not practical for the 99%, but a lot closer to what passes for a DG magazine rifle, and with a major attitude!