any big cut on contact head like a Simmons, used with a Zwickey Scorpio on the shaft behind the head to impede penetration to about 12-16 inches. The shaft staying in the bird inhibits its ability to fly, or run very far.
Same as above mentioned. I have used 125 grain three blade Muzzys for both deer and turkey. The birds went 20 and 40 yards respectively. I thought 40 yards was far, however turkeys prove to be a worthy target past 30 yards oblong and never staying still for long.