I've been playing sniper some more and one thing that has been bugging me is that the hitbox for pros when they are in the animation for "using" a turret nub is way off. I can shoot the head, and neck and not get a head shot. Sometimes I've seen assault grenade go through someones leg. It is really quite irritating.
Yes, I agree, very frustrating. I always seem to miss whenever they are bending down to buy a turret.
Do a test, next time someone is trying to buy a turret, aim for where their head would be if they were standing up or buying skills