Let me add this too
" Where to Aim - Quartering Toward
Bow: This is one of the poorest bow shots and should not be taken. Picking a spot behind the shoulder will result in the arrow barely missing the vital organs and angling back into the stomach and intes tines. Heavy shoulder bones shield the majority of the vital organs from penetration by arrow. An error of only on inch or two will result in a miss or a non-fatal hit in the shoulder. Another disadvantage of this angle is the possibility that the animal will sec the hunter drawing his bow. Wait for the animal to pass by and take a broadside or quartering-away shot.
Gun: The quartering-toward angle is fine for a firearm. Aim at the head, neck or front of the shoulder for an effective hit. A light bullet may deflect off the shoulder bones of large big game such as elk, moose or large bears. Be certain you use a firearm and ammunition adequate for the game you hunt and type of shot you select.
Where to Aim - Head-On Shots"
Thats from NBEF - you'd think they know SOMETHING about deer and shot placement ...
http://www.nbef.org/deer_java.html