[Guilty Gear Strive] Happy Chaos No Meter/Ammo Dust Combo (188 damage)
[D], delay j.2K, j.S, jc, j.S, j.S, j.S, finisher
There's a billion different variations using ammo, so I haven't pinpointed that yet. So far I've gotten multiple routes into 197 damage, the lowest using only two bullets. If I find that before I see it, I'll post it.
That said, I don't think charged dust is too worthwhile for HC. His Dust has terrible range, and you can simply combo uncharged dust into Fire for the same-ish damage + corner carry.