RE: finding knetic energy
Here you go.
velocity x velocity x total arrow weight (in grains) divided by 450,240
In addition, here's a basic guide for ke
KE
Hunting Usage
< 25 ft. lbs.
Small Game
25-41 ft. lbs.
Medium Game (deer, antelope, etc.)
42-65 ft. lbs.
Large Game (elk, black bear, wild boar, etc.)
> 65 ft. lbs.
Toughest Game (Cape Buffalo, Grizzly, etc.)