I use the rocket sidewinder 100 gra and 1 1/2" cut
I place a 5 gra washer behind the broadhead to act as a stop for the blades that way the blades don't lay as flat.

This year at 18yd shooting 62 lbs 435gra arrow @ 260 fps Arrow went up to the lettering bird went 8yds. Great set up for TURKEYS ONLY.

Just to let you know I do use fixed blades for all other archery hunting. But for turkeys you can't go wrong with a good mechanical broadhead.