Turkey hunting with rifle in GA is ilegal in now but back in the 60's when it was I used to call for people. I never cared a whole lot about shooting them, but have always enjoyed calling. I almost always took a camera instead of a gun. I had some bosses I called for one season and my only job during turkey season was to meet them at their hunting club, every morning and afternoon to call for them. At the start of the season, I told them the best weapon was a 12 guage Magnum super full choke barrel with #6 shot. Both of these guys were big time riflemen and thought to heck with that, they showed up the first moning with 222's. By the end of the season, one of them was turkey hunting with a 30-06. They had shot 26 gobblers between the first day and the last day of season and never carried one out of the woods. They left enough feathers scattered through those woods to stuff a bed mattress. The last day, I called one that came straight to the guy with the 30-06. It got so close before he shot, I was starting the think he had gone to sleep or something. He said he just waited until there was nothing but turkey in the scope before he fired. The last I say of that turkey, what was left of it was running about 30mph through the woods.
Turkeys are mostly breast and have a very small kill area. As mentioned, if you follow that line down the side of their neck to where it meets the base of the wings, that's where the heart sits. Much outside that area and you hit nothing but breast and the turkey just runs off and dies. Sometimes if gut shot, you might get one.