Not to tell an "Old Turkey" how to fly, BUT remember a head or neck shot is best to down a turkey.
Those big old feathers on the body will not let most shot in, so a body shot is not a definite kill.
So, #4,5,or 6 into the neck and head will do most damage, and quick kill.
Just a suggestion from one "Old Buzzard" to another.
Happy New Year!
Fred