Shot placement has an effect on the quality and yield of the meat form the animal. Meat from game killed instantly without stress is more tender as chemicals released when the animal is frightened is absent.  These chemicals like adrenalin make the meat tough and gamey.  A poorly placed shot can rupture the stomach or intestine tainting the meat or damage choice cuts. Shots should be attempted when the animal is standing still and aimed at the heart or neck to quickly drop the animal with less meat yield loss.