awshucks,
Your deer weight calculating chart is probably accurate at least until it comes to the "edible meat" numbers.
I was a deer processor for years and my brother and nephew still do it. We saw these charts before and done some tests of our own.
We would take a head shot deer, for optimum ediblemeat,
weight it field dressed then work it up. We do notuse a saw, only knives, and weremove all bones, fat andsinew. Even with head shot deer the best we could come up with was between 25-28 percent edible meat. Then if one or both front shoulders were bloodied from the shot,edible meatdropped to 20% or below. We did this test on small and large deer and the numbers were consistent.

xbowbarry