Here's an online link:

http://www.dewclawarchery.com/Kinetic_Engery_Calculator-a/157.htm

And if you have a pocket protector and a Hewlett Packard handy:

The kinetic energy formula is:

1/2 Mass times velocity squared

or

Kinetic Energy = (1/2 M) x (V2)


I'd agree with the cam comment above, and the other advantage with the new bows is weight reduction and riser design. I still have a Golden Eagle Hunter that I break out once in a while as a reminder of what will kill deer, and what advantages a new bow has. My Hunter still works, if your bow is still working for you, no need to change unless you find a design or feature that really appeals to you.

Best advice I could suggest is to go shoot every bow you can in your local bow shop, and see if any really give you an advantage/gain over your current set-up.

Last edited by AH64guy; 09/17/12.