Free Recoil Energy

First Load
Second Load
Bullets (or shot) weight in grains
Bullet velocity in fps
Powder weight in grains
Firearm weight in pounds
 
 
Free Recoil Energy
ft lb
ft lb
 
NOTE: Firearm weight must be in pounds; ejecta and powder charge in grains; velocity in feet per second. Free recoil energy will then be expressed in foot pounds
 
https://saami.org/wp-content/uploads/2018/07/Gun-Recoil-Formulae-2018-07-9-1.pdf
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