I have been doing some calculating on different bullets weights on velocity and energy.
Vel.xVel.x bullet weight
divided by 450,240 = ft.lbs. energy
Example - 300 gr. bullet at 1900 fps = 2405 ft. lbs.
So, that gives me energy at the muzzle.......Anybody know how to calculate the energy at 100 yds - 200 yds. ???