Calculations, equations, and formulas

 I'm somewhat of a math and physics nerd, and I love ballistics. The more common equations I am familiar with, but there are a few where I am not sure Of where to find a reference, or what to even call them. One equation that I would take particular interest in is how to calculate the energy lost to pellet deformation, hollow points in particular. Unless the deformation energy is negligible?

I'm looking to calculate things like the rate of energy transfer, impact force, energy lost to pellet deformation, foot pounds per square inch, force per inch, etc.