I don’t believe the screw pictured will work as well as you hope it will, because it doesn’t come close enough to the walls.
I’m guessing that design is based on the vessel at hand, ie the holes available for insertion.
Cylinders are way easier to unload…
I actually built a hash cannon just this morning…didn’t get pictures (maybe @thesk8nmidget can dig up video from our security footage?).
There are other strategies, but most of the ideas I have on the subject are ones pulled from @Lincoln20XX’s head…I suspect he’d be more inclined to share them on a private channel.
I assume your vessel is jacketed and cold as fuck, which would put scaling this strategy off the table…