Re: opinion wanted on caliber choice
Why are you limiting yourself to only those two choices? You need to give some more information. Those two along with the 338-300 RUM some are calling edge here are identical in performance so take your pick. In other words either will make any shot the other two will. There is quite a bit to consider between these two so you need to talk to someone very knowledgable on the subject. There are others that significantly outperform these three velocity wise if you want to shoot longer distances. Many things you need to consider so need way more information.
Predictions are difficult, especially when they involve the future