Not so much as Tac 3, Tac 5, Pap South FO points after I became a recon Sgt/FO. And also did it off of an M-60A2 experimenting with the FIST concept. Because I FO’ed off a tank I went to 2 years of gunnery at Graf and maneuvers at Hohenfels. plus Wild Chicken thrown in.
Remember the FADAC computer? LOL, we used to manually compute quicker than it.