I USED to be a good shot.
Agree, that doves coming straight at you, or quail/pheasant flying straight away are by far the easiest shots.
The only times I was ever truly "deadly" during quail and pheasant season were the years when I went out with buddies and we shot at a lot of doves! Passing shots on quail and pheasants seemed much easier after practicing a lot on doves.