Deer Hunting Ethics question

[swamp snorkler]

I've shot 2......
1 in the neck and one in the shoulder.

I should have shot the first one in the neck as well.

My father in law has killed probably a 100 deer and he hits them right where the head meets the neck 75% of the time, when they hit the ground they dead 90% of the time. The only deer he shoots in the shoulder are bucks which will be made into sausage anyway. I say closer that 75 shoot them in the neck after that, shoulder shots.