Look at the ballistics charts on the 375 HH mags, and then compare them to the 338 RUM. The Rum hits harder and is running faster with a heavier bullet than the 375 HH. Your going to pay the same amount for the guns. Why not buy something that is not to say a better cal. but is going to give you more bang for your bucks. No matter what cal. you buy you still have to be a competent shooter , and give the respect to the game in qhich you are hunting. Make that one shot kill. Just my thoughts.