A lifetime of reading Field & Stream, Outdoor Sports, etc, combined with an avalanch of images and advice on the web from bow and rifle hunting sites has engrained this aiming point into my head:
"BEHIND THE SHOULDER"
But I know better from my own actual hunting experiences shooting other game. That big ol' yellow aiming area is not ideal at all. I can only guess that since a large portion of deer hunters can barely hit the broad side of a barn, that's what they should "aim" for. That's why they say anywhere in that 10" vital area is sufficient, because who can't hit a 10" target at typical deer hunting distances?
There are others who narrow it down a little and say to aim for the crease behind the leg. That's probably a much better shot. Like this:
But isn't there an even better shot? I'm an experienced predator hunter and I take pride in marksmanship and dropping animals dead on the spot. There is definately a magic death zone that drops them like rocks. I draw a line up the front leg and down the neck and shoot at the intersection like this:
So I would assume that would also work for deer? Seems this is not a very popular shot. 90% of the "advice" you hear on the internet is to take a safe shot and shoot behind the shoulder for a double lung shot. But the way I read anatomy, that's barely even a lung shot, closer to the diaphram and liver in reality.
I think this would be a more effective shot on a simple broadside target: