Can someone give me the formula for calculating foot-pounds of punch for my longbow and arrow?
I have a 56# longbow, shooting 180 fps, 473 gr. arrow?  Any math wizards out there?
Thanks!

weight times velocity squared divided by 450,240.

Or, you can go to the Jackson Archery website and use the calculator link at the top of the page.

Bill

http://bowsite.com/bowsite/features/practical_bowhunter/penetration/index.cfm

KE isn't everything though