How about a water balloon gun?

[Freezer]

Where's JSD when you need him?

I used to make surgical tube launchers and we could launch a balloon almost a quarter mile if we had enough drop, 100 yards was easy! We had a lot of fun at family gatherings with them. I'm bored out of my skin and have been doing a lot of reading and research about MLs and found a rabbit hole, first small cannons, too expensive. Then potato and golf ball guns. I know they're not a good idea but the head was engaged. If I could use a paper or waxed cup, slice the sides and fit it tight into the barrel it would act like a sabot or wad, protecting the balloon until it exited that barrel. Small Dixie cups would be real cool and might enable you to use a self contained cylinder to charge the cylinder.

Not exactly a firearm but cool to shoot! Any ideas?

[CPJ 2.0]

Here’s your rabbit hole. He uses a tire bead seater, electric valve. Launches mainly 3d printed projectiles.
Here’s a long video, but he’s got a butt load of short ones. I know he’s shot ice bullets before, not sure about balloons.

https://youtu.be/0tDNk6osrTs?si=65WYbtMpuweG5TyH

[CPJ 2.0]

Here’s a short video. His specialty is making siren/whistle projectiles

https://youtube.com/shorts/psCljmS3-XQ? ... w5Qs01KydD

[Freezer]

Those are cool but I have a small portable compressor. I want something hand or shoulder held. they're shooting things that will hurt someone. I want to shoot water balloons for three flies up. Catch three, get wet and you get to operate the gun!

[Zorba]

Some of the shop boys made a water balloon catapult in high school. Lobbed water balloons over the top of the cafeteria into the inner court during lunch time. I remember a kind of spun dish to load the balloons onto.

[CPJ 2.0]

Those are cool but I have a small portable compressor. I want something hand or shoulder held. they're shooting things that will hurt someone. I want to shoot water balloons for three flies up. Catch three, get wet and you get to operate the gun!

Then use less pressure. Science!