Bullet Energy Calculations
Energy in foot-pounds : 1/2( velocity ( fps ) x velocity ( fps ) x projectile weight ( grains ) ) / 450240 = ft-lbs
Energy in Joules : 1/2( velocity ( mps ) x velocity ( mps ) x projectile weight ( grams ) ) / 2000 = J
To convert ft-lbs to Joules = ft-lbs x 1.355817 = Joules
To convert Joules to ft-lbs = Joules / 1.355817 = ft-lbs
