I was reading a feature article about hunting desert bucks in Arizona and decided to follow the provided link to the guy’s website who had been featured in the magazine.  That website turned out to be Sonoran Bowhunting Products, Inc. I was clicking around on the site and found something very useful that all the archery hunting blog readers will appreciate - a calculator that outputs the kinetic energy that your archery setup produces.  It requires user input such as arrow length, broadhead weight, vane length, arrow weight, and poundage.  Then you simply click on the calculate button and your kinetic energy magically appears.  For anyone who has tried to calculate these numbers on their own, you know how big of a pain it is.  Hope you guys and gals visit the link and use the valuable tool provided.