Re: Ft lb of energy needed per lb of animal?
308WIN put it well. You have to remember that some animals flesh is denser than others. Like grizzly bears being the densest. I prefer about 2 times their body weight minimum. or for the biggest of them 3000 FPE impact, not muzzle energy. For elk I prefer 1500 minimum for impact energy. Dall sheep I only need 500 FPE. Deer as a whole I like 1000 FPE. Each animal not only have different densities but differant bone structures as well. Also, many have differant drives and will power to survive. Moose are bigger than elk by far, yet moose are easy to kill compared to elk. Moose are more like mule deer, they walk about 20 paces after being hit and thats it.
Long range shooting is a process that ends with a result. Once you start to focus on the result (how bad your last shot was, how big the group is going to be, what your buck will score, what your match score is, what place you are in...) then you loose the capacity to focus on the process.