Current turrets ^
Its shooting at a stationary target while the base is spinning on just one axis
Old turrets^ the middle front turret didnt even wake up to pirates until half way through, and the ams didn't hit any missiles, aiming generally 90 degrees off from the missile they were trying to hit.
The old system really limited where you could place your turrets, and what overall shape they would have :/
and while they did work well for some stuff, like tanks
they always had that half-block floaty separation from the mount, and your better off at just doing stuff like this:
warthog like from halo, or have the barrel move up and down inside of of the tank turret.