It's broken right now-it does no damage, and only breaks blocks. On top of that, there's a delay before the explosion, AND it's slow.
Currently VHA is the only thing I'm waiting for them to fix-could I possibly have a developer comment on this thread about the current state of VHA, and if it's intended to work as it does currently?
To everyone else, just avoid it for now.
I'm taking it for thematics even if it doesn't work properly yet. I need that dynamite with my laser beam.