RE: Turkey advice
Well for one thing ,this thread should be in the turkey hunting forum.
Second : You should never grind your broadheads.
Now to answer your question , if the bird is broadside then aim for the shoulder of the wing that way when you hit the bird it won't fly off.
If the birdis facing you be careful of your movement and aim just above the beard or below the neck if it s a hen.
Say the birds got it back to you and its fanned out then you should shoot it right in it s rear end but if its not fanned out then aim just above its tail more center of itsback.
Now if your a really good shooter with your bow you could try to decapitate the bird, I've seen it done and the bird isn't going anywhere with out its head.