SteveB wrote:

On the 30mm chain cannon footage I saw, it was at max range, which is 4,000m
for the chain cannon. Nearly three miles.

The TADS system is used for targeting Hellfires, which have a range of
greater than 8 Km. One would expect a usuable FOV at that range.

Here's a youtube clip:

http://www.youtube.com/watch?v=YOsaQKGyvaU

Kevin Gallimore