M.F:  A .22 will do fine for a Turkey,but you`ll need to make a clean Head-Shot......I`ve seen a Turkey,hit in the body with a 30-30,jump up and fly two field`s over....so one shot to the head WILL drop it........STILL ASK YOU MOM FOR A BOW

I`ve seen that Broadhead your talking about......WOW  I use my 100gr Muzzy Three Blade Broadhead,but they sell a little ring that goes between your Arrow and your broadhead,it has several metal finger`s that slow the arrow after the broadhead has entered,so your arrow doesn`t blow clean through the bird

Also make sure it`s Leagle to harvest a Turkey during the time you`ll be there

Good Luck !

Not Just Another Cracker !