Just put a low power scope on the 458Win & take just that, you can easy shoot 200yds even with 500gr slugs, thats for Aussie & Buff, works very well on all game, no so much at 400yd on plains game, paint the Hornady DGX green & throw them in the long grass !

I think the 480Gr is a good idea how ever .

I use the 458Win a LOT !