According to Understanding Firearms Ballistics by Robert Rinker, a shotgun that truly doubles (both barrels fire at exact same time) would have not twice the recoil energy, but quadruple. Is this true, and if so why?
The weight and velocity of the charge etc remain the same, but the gun comes back with twice the velocity, thus quadruple the energy.
The weight and velocity of the charge etc remain the same, but the gun comes back with twice the velocity, thus quadruple the energy.