No most here are not getting the fact that KE is calculated with mass and velocity. I have said many times that it is bullet construction that applies that energy through how it's mass deforms. What KE defines is how much work a mass can potentially do when moving at a certain velocity. The killing of an animal depends on several things, bullet placement, how the bullets energy is utilized, even the state of mind of the animal. More kinetic energy is better up until it isn't. I'd say that is the point past adequate. Adequate is also subjective among individual preferences. Anyone who says energy plays no part in measuring cartridge performance is fooling themselves. KE is a useful equation, not perfect but still useful.