This is a popular broad head for turkey.
Gobbler Guillotine

The big thing is anchoring the bird. I have talked to a lot of guys who have lost birds after they hit them with arrows. I thought that was bad, but recently I have seen just as many guys lose the bird after shooting it with pellets. I guess it just comes down to making a safe, predictable shot. Using a mouth/reed call would be key in drawing and calling. Or team hunting would work. I have often pulled back behind the shooter to get the bird in closer.