Well BT, anyone who know me would ever accuse me of knowing everything, they know better than that!
As far as shots on turkeys goes, if you are confedient and good enough the head shot (I' m not there yet) is a sure and quick death. More power to you!
The base of the tail on a strutting bird that is turned away from you is a quality shot, breaking the back and taking out the vitals as well. I know there are more, but I' m going to leave room for more guys to post. Gobble, Gobble, man I can' t wait!