I built a potato gun (actually more like a cannon) it uses a s.plug and needs a car. And a bit of nitrous. Let's just say that nobody "holds" this thing.
Are they legal in washington? Because I would'nt exactly blast one off on the rogue without like that without expecting to talk to someone with a badge.

MH

P.S. they can only get so powerful before they become mashed potato shooters. Turnips are the rounds of choice for me, much more dense (they don't come out of the barrel on fire and in 10,000 pieces).