Being primarily a bowhunter I have trained myself to take a heart/lung shot. Anything else with a bow won't do. With a gun the kill is done with impact instead of cutting. So you can hit in the shoulder neck area and likely drop them in thier tracks. Still since I bowhunt more my instincts take over and I shoot for the vitals everytime. Plus if you off a little with a bullet you've still got a killing shot.