I' ll aim for the bottom part of the lungs. I agree with Tazman too.... If the buck ducks or " jumps the string" as the saying goes, he' s ducking down in a scared state of mind before he takes off.

Remember this photo (courtesy of Buck Magnet' s website)? Imagine this big boy 25 yards away from you. Study his chest cavity and left shoulder. Where exactly is the A#1 spot, to drop this guy in a hurry? (My preference: Right there in the dark section of fur right behind the left shoulder).

Butch