Shotgun Recoil Energy, Impulse & Velocity Calculator

Usage: Select the UOM system, that is English (lbs & fps) or Metric (kgs & meters), by default English is taken.
Type in the appropriate values & click the Calculate button. Change of the UOM system setting causes recalculation of the given data. UOM system change converts the entered data to the corresponding UOM system, so you can use it as a converter too.