Force as in energy? Energy in handgun ammunition is nothing more than heat, and what does not become heat is accounted for by the elasticity of flesh. Force or Energy is not any kind of wounding factor what so ever. You left out that in your equation.

There is but one sole wounding factor in handgun ammunition, and that is the Permanent Crush Cavity(PCC). The PCC is the tissue the bullet actually makes contact with, and destroys. The more the better. In a handgun round there are two way to do this, by penetration and expansion. Penetration being the most crucial of the two by far.