Post by Justin on Feb 19, 2011 17:13:28 GMT -5
thought some of us could use this info
Arrow velocity squared x arrow-weight in grains divided by 450,240 = ft. lbs. of KE.....
example:
260 fps x 260 fps = 67,600 x 400 gr. arrow-weight = 27,040,000
27,040,000 divided by 450,240 = 60.05 fpe (ft. lbs. of energy)
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.)
Arrow velocity squared x arrow-weight in grains divided by 450,240 = ft. lbs. of KE.....
example:
260 fps x 260 fps = 67,600 x 400 gr. arrow-weight = 27,040,000
27,040,000 divided by 450,240 = 60.05 fpe (ft. lbs. of energy)
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.)