Many people consider the .243 the perfect whitetail gun. Shoot 'em in the neck if you're accurate enough, and they will drop like a stone. There is a spot at the base of the neck, where it connects with the backbone, if you hit this spot the deer will not even twitch. The "high percentage" shot is going to be middle of the body just behind the front shoulder or through the front shoulder. You want to consider the exit spot to determine the aiming point. Make the bullet exit the opposite front shoulder, and you should never lose one if you hit what you are aiming at.

ROLL TIDE - WHIP THEM DAWGS