24 inch by 4 inch diameter chamber.
30 inch by 2 inch diameter barrel.
The Weathermatic 1.5 inch sprinkler valve is actuated by a 1 inch Orbit which is then piloted by a modified tire inflator.
My ammo preferences are; Nerf Pocket Vortex football, foam practice golf balls, small whiffle balls, foam pet toy balls and foam toy rockets.
I use closed cell foam stress balls for a sabot/wadding. This gives both a tighter seal and also cushions the projectiles.
Constructive criticism welcome.







