I played on Veteran yesterday 3 times...I got a 59/100, a 77/100 and 79/100.
The first time I used the Warhound 100%, I only fired my weapon once at the beginning for the 1st Sync Shot.
The second time, same thing, but I tried to increase my accuracy with the Warhound.
Third time I tried shooting and Warhound, I guess I just wasn't good enough.
I did finish Raven Strike on Elite though. Gotta go back and finish up the tactical stuff.