What really piqued my interest in trying whole thing was seeing foam practice golf balls at K-Mart. Roughly the same size as Nerf balls, you can get them a lot cheaper in bulk (50 for $20). If this ends up being practical (HAH!), I don't want to have to keep buying six balls for $4.
The balls have pretty much the same diameter as the OD of 1.25" PVC...which means they shove very nicely into a 1.25" coupler.
It's trivial to make a ballgun barrel...it's the same barrel adapter I use for any other SNAP (.5" PVC -> .5"/1.25" reducer -> 1.25" coupler).
The gun with the barrel.
Intial ranges were, shall we say, modest...so I added a strip of electrical tape to the inside of the barrel to add resistance.
So, ranges. With the current barrel setup, it gets 22-25' pretty consistently. (I tried the barrel on the SNAP-1, and ranges were even worse: about 12'.) It definitely needs the air volume to fire, but I question if either the barrel is currently tight enough or long enough to maximize range. Natrally, I just ran out of electrical tape, so I can't try making the barrel tighter until later.
I'm going to keep experimenting with either the length of the barrel, of some manner of tension points in the barrel, so the ball can be released after a greater buildup of pressure.
Edited by Carbon, 30 May 2016 - 04:56 PM.