Calculate the free recoil energy and recoil velocity of a firearm.
Firearm Data
Recoil Stats
Enter firearm details
Quick Reference
MGun Mass
VRecoil Velocity
1 ft·lb1.36 Joules
7000 gr1 lb
Overview
Recoil is the backward movement of a gun when it is discharged. This calculator uses the law of conservation of momentum to estimate the recoil energy 'felt' by the shooter (Free Recoil).
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Pro Tips
Heavier guns generally have less felt recoil for the same cartridge.
Higher muzzle velocity and heavier bullets increase recoil.
Powder charge weight also contributes to recoil momentum (gas ejecta).
Formula: E = 0.5 * M_gun * V_gun^2
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Fun Facts
"Newton's Third Law (Every action has an equal and opposite reaction) is the governing principle of recoil."
"Muzzle brakes reduce recoil by redirecting propellant gases to the side or rear."
"A .50 BMG rifle can produce over 80 ft-lbs of recoil energy, compared to ~15 ft-lbs for a .308 Winchester."
