It’s all a preference of what cycles and shoots best in your BAR. Personally I wouldn’t waste a 160 class 7mm bullet on any deer. A 140 NBT at 3,300 fps will accurately reach farther than you can shoot and possibly cycle better in an autoloader. The 140 NBT out of a 7mm Rem Mag at that speed will devastate any deer or pronghorn that walks at 500 yards.