Minimum speed - don't worry about this.


Maximum speed with a broadhead? In my opinion, there is no maximum speed either. Your arrow only needs to follow a few basic rules and it will fly perfectly, no matter how fast. You need a spine that is stiff enough for the draw weight, draw length and arrow length. You need enough weight up front to give a reasonalble good FOC. I'd shoot for a minimum of 12-15%. You also need good drag on the rear - helical feathers are a good example here. If you can get such an arrow to fly at 400 fps, I'll all but guarantee it will fly great. The problem is always getting the proper spec'd arrow to go that fast. With current bow and arrow technology, I doubt you could design an arrow that would meet this criteria and find a bow capable of sending it at more than 270-280 fps.