Shoot the biggest Caliber you can shoot accurately. Then look at energy and velocity and determine what your effective range should be. 1800+ FPS and 2000 ft lbs at impact is optimal, but that’s a little subjective. The fT lbs doesn’t have to be 2000. We all strive for MOA accuracy, but you can kill animals with 2 MOA accuracy if you limit your distance. Shoot a well constructed bullet. Shoot for the off side shoulder and you’ll be fine.