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Old December 10, 2012, 11:00 AM   #17
simonrichter
Senior Member
 
Join Date: December 3, 2011
Location: Austria
Posts: 363
Quote:
The formula for calculating energy is pretty simple. All you need is the bullet weight and muzzle velocity. It is:

Velocity X Velocity X Wt of the bullet in grains / 450240

For example a 230 gr bullet at 850 FPS.

850 X 850 X 230 / 450240 = 369 FT LBS energy.
...or just switch to the metric system (j) :

velocity x velocity (m/s) x weight (kg, 1g = 0,001kg) / 2 = Energy (j)
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