Since this seems to be where Bungie really reads feedback, there's no heavy ammo dropping whatsoever in The Whisper heroic quest, two runs and no one on my Fireteam saw any. I know there are already posts about this, but I'm adding to it so they'll acknowledge it, hopefully. Before anyone says it, "they changed ammo economy" is a nonsense answer for this case. NO heavy ammo over two runs all the way to the last room for three different people is not acceptable even with an RNG ammo economy, so feel free to keep any such comments to yourself.