Reed13k...
That brings back memories of being in during the transition from the M60A3 (dinosaurs) to the M-1 (starships). During gunnery the starship guys would do okay (although the sights and computers were actually more advanced in the M60A3).
Where the dinosaurs really shone was during degraded gunnery (i.e. no ballistic computer and shooting through the M105D telescope with the Mark 1 Eyeball...).
A really neat trick was to use the coax (the machine gun next to the main gun) as a spotter for the HEAT (High Explosive Anti-Tank) rounds...
Man, you are dating yourself.