And that is material how? He can also move on his feet...
If it is facing 90° from you and you hit him in the snout you would have also missed the heart and hit it in the brisket. If you missed the other way you either hit it in the spine or its a clean miss. With a body shot and you missed the other way so now you shot him in the diaphram.
In either case have no business shooting it if you cant make the shot correctly and the result is you wounded a deer that will hopefully die quickly instead of days later. If hes facing you or away no snout is going to stop a bullet from flying through its head.
Heres a picture of a cull buck a person shot in the brisket that didnt go down for quite awhile. Notice how it ran far enough for long enough for coyotes to have eaten him up in the time it took for us to get out there and track it down later after learning about the shot at dinner 2 hours later.
You tell me whats the more humane kill: brains splattered about on the spot it was shot or hoping he expired and was not merely wounded while being eaten alive?