No, he means the 5 inch rockets..
Coincidentally, I've got more A2A kills with the 5 inch rockets (1) then I've ever gotten with the LW rockets in the MA.
I did grab a crew of guys a while back, we spent a few hours lobbing rockets at bombers in the DA. In a tail chase, d1.4 is about the max range, then they blow up. Unless you actually hit a bomber, you won't kill one. However, if you DO hit a bomber, I've seen the whole formation blow up from 1 rocket hit.
I fired the 5 inch rocket at about 1500 yards on a "head on"... actually hit the guy and knocked his wing off. I was pleasantly surprised (ok, ok, I laughed like a friggin hyena.. but thats just cause I'd never seen it before).