When people start talking about zero wind my BS meter goes off as well.
I have had days out shooting where I had no wind hold at 600 yards and couldn't feel a breeze, shot at 1100 yards and was surprised as hell to see two moa of drift at that range vs nothing at 600.
If it is truly zero wind which I have never had the pleasure of shooting in then yes, dial and shoot you should hit what you are aiming at.
In a hunting situation however there are a lot of factors that go into that 1000 yard chip shot that make it anything but a chip shot. YMMV
