Finally got one!

http://xboxdvr.com/gamer/Bloody%20Nubs/video/13898210

You gotta use the smaw it’s a higher velocity with a much flatter trajectory
I get at least three daily

Switched from RPG to SMAW and just got my first chopper kill. Thanks.

You’re welcome! Its truly some of the most satisfying kills. I’d dedicate time to learn how people move in little birds and the Russian equivalent they’re very agile and fast.