The only thing I'll add is that tuning for broadhead flight is more critical than tuning for field tips. It is very important to design and fine tune your arrow for the correct spine. You also want to make sure you have enough weight up front. Light weight broadheads on improperly spined arrows are the biggest reason penetration can be poor on high draw weight bows.

Loading weight on the front end and creating high drag on the rear of a properly spined arrow will give you a great shooting, high penetrating broadhead tipped arrow.