Question regarding Russian LVE 7.62 x 54R hunting ammunition

[vintage hunter]

Why is it unethical to shoot an animal with a bullet that is perfectly ethical to use on humans?
Which is more ethical, a well placed fmj that kills the animal immediately or within a few seconds at most or a poorly placed state of the art purpose made hunting bullet where the animal dies a slow agonizing death that may take hours to come?
Marksmanship skills and bullet placement trumps bullet construction any day of the week, imo.
Pic: exit wound from 5.56mm M193 ball( about as unethical of a combination as you can have according to the purist Fudds) at approx. 140 yds that brushed the spine taking out the aortic artery in the process. Deer was dead before it fell over.