Question About Shooting Mechanical Broadheads

Question:
I am planning on using mechanical broadheads, but I have some reservations about these heads. My bow, is at 65 pounds and 28 inch draw, produces 54.4 ft-lbs of kinetic energy shooting 27 inch 2413′s. Is this enough energy for using mechanical heads on deer? I hunt from ground blinds so I won’t be taking sharply downward shots. What is the lowest kinetic energy needed for mechanical heads?

Answer:
We talked to several manufacturers of mechanical heads and asked them the same question. Of course, their answers varied, and the cutting diameter of the heads in question had a lot to do with it. You may be surprised to find that the average minimum kinetic energy recommended for using 1 ½ inch mechanical heads for whitetails was 55 ft-lbs. That’s almost exactly what you’re shooting. Smaller heads would require slightly less energy for complete pass-throughs. Therefore, you should be fine with your set-up. Incidentally, the same experts recommended at least 65 ft- lbs of energy for elk and caribou.

FYI: kinetic energy is calculated using the following equation: KE = total arrow grain weight divided by 450,800 and then multiplied by the arrow velocity in fps squared.

The following video is really a commercial for Grim Reaper Broadheads http://www.eders.com/categories/grim-reaper/ but is still pretty cool.