Myself, I avoid hitting the shoulder on any game animal. Waist of good meat when you do so.
Take a look at this video and you decide what you need for a bullet.
http://www.youtube.com/watch?v=u6uo0...eature=related
Everybody has their own choices in bullets to use depending on the game animal they are hunting. I have a few I prefer base on experience in the field and these have never failed me.