There's really no good answer to your question. First, depends in part on what big game you will be hunting to determine the best ammo/bullet weight to use. Following that, and assuming there will be several factory loads available for a given weight, the only way to determine what's best for your particular rifle is to buy a box of each brand,
and try them to see which one performs best in your rifle. Each rifle is an individual as to its' likes/dislikes when it comes to ammo.