Recoil Energy Calculator

Free calculate recoil energy and velocity of firearms based on bullet mass, velocity, powder charge, and firearm mass.

Input Parameters

Rifles: ~1585 m/s, Handguns: ~1707 m/s

kg

Results

Enter parameters to calculate recoil

Recoil Energy Formulas

Recoil Velocity

V_f = (M_b × V_b + M_c × V_c) / (M_f × 1000)

Where:

  • • M_b = bullet mass (g)
  • • V_b = bullet velocity (m/s)
  • • M_c = powder mass (g)
  • • V_c = powder velocity (m/s)
  • • M_f = firearm mass (kg)

Recoil Energy

E_r = ½ × M_f × V_f²

Kinetic energy of the firearm

Typical Powder Velocities

  • • Rifles: ~1,585 m/s
  • • Handguns: ~1,707 m/s
  • • BMGs: ~1,433 m/s

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