I have killed turkeys with snuffers, woodsmen, magnus and ace heads. My experience is that long and pointy is better than short and wide. The longer, slimmer head jets through the feathers better, for me.
Turkeys are smaller than deer and a lot of folks think that as long as they hit the bird, it will drop. Again, in my experience this is not so. I think shot placement on a turkey is just as important as on a deer.
Many hunters pick their spot at the wing butt or at the "elbow". When I have cleaned birds, my eyes tell me the kill zone is actually a little forward and below this area. From what I can see, an arrow through the wing amounts to a gut shot.
I pick my spot forward and slightly below the wing base. I try to picture a softball right in the center of the chest and hit that. The spherical softball visualization helps with shots other than broadsides.
Turkeys, like most birds, generally die from shock after serious injury, but they can cover some good distance on auto pilot. I hit a bird once, dead in the elbow of the wing (NOT what I was trying to do). Total pass through. It managed to take wing and coast for 250 yards. It made a crash landing and stuffed itself under a log 20 yards farther on. Baxter, my black lab, was the hero that day. He found it after 30 min. of searching.
I use the woodsmans for the most part these days. A few helpful hints have been given to me by fellas with far more experience than I, and I will pass them on. First, an alerted turkey is more likely to fly or run off a distance after a hit than a turkey that is unaware of a hunter. Hard to do? Absolutely! Second, a pass through is always better than no pass through (two holes bleeding freely is better than one). Last, don’t just pick a spot, pick a moment. Shooting a full strut bird is always a bad idea (unless you go straight up the tailpipe so to speak). A spooked or running bird is also less than an ideal target.
Stay after it. Practice up some. A target with a turkey or some sort of 3-d target is good practice to train your eye for where your arrow needs to go.
Good luck, have fun!
OkKeith