If you have the "buck of a life time" following a trail walking directly toward you and you know he'll detect you as he gets closer, would you take the frontal shot (chest) if thats all it offered? The rifle is a .243 Win

Based on our set-up and the pattern of the deer, my son may be faceed with this scenario opening day. My .30-06 would have no problem. I just don't know if the .243 will do the job from this angle.

What are your thoughts?