I use a 100gr Spitfire (open on impact broadhead) why I use them, is for years I shot 100gr fixed Muzzy 3 blade broadhead and they would go through the Turkey so fast at times it was hard to find the birds. With the open on impact broardheads the arrows slow down and don't always go through the bird also the Spitfire is making a new Gobbler head that has a round point making it harder to go through the Turkey also I drop the poundage on my bow 10 pounds or so.
Hope this helps Good Luck