It seems...
No such thing as a sharp shooter in a helicopter
Single shot at a moving target from a moving and vibrating platform = low probability of a hit.
There's a reason airplanes use machine guns
...to me that a shooter in a helicopter, coming in high behind the perp, then lowering to, what, 100' or so, same relative speed, could, with a high degree of accuracy, hit the damn hood a few times. Call it a three round burst from an AR type, AP rounds. Have a spotter looking at the immediate surroundings to call off or shoot. Get 'em when they slow to turn or turn around.
I mean, I don't know, but I just think a SWAT/Helo team could develop a technique, that, if nothing else that could reach a shoot/no shoot level of proficiency depending on circumstances as they develop.
We got an awful lot of pilots and shooters with precise battlefield experience who will be/are looking for work.
High speed criminals exact far too horrific a toll to have no tactical response, in my view.