( SuperBall Cannon 500ft/s)
This is probably my favorite cannon i have ever built. silent, powerful, bolt action, simple and effective. It took me about 2 weeks to finsh (only had like an hour to work a day on it because i had work) and it took me a week to paint it.
The chamber is conctructed out of 3" diameter pvc sch 40 pipe and is about 14" long (98 cubic inchs) and I use a schrader valve to fill the chamber. I used a modded sprinkler which had a threaded 1" inlet/outlet. (I think it was a rain bird). The barrel is 1.5" diameter sch 40 pve pipe and is about 22 inches long (38.8 cubic inchs). That gives me a C:B ratio of about 2.5 to 1. The bolt is a piece of 1" sch40 pvc pipe which I then had to rap with this 8mm think tape so it would fit almost pefectly in the barrel. I used a 1/4 inch bolt to make the handle for the bolt and a dremel to cut the slot in the barrel for the handle.
The orignal ammo was superballs, but after almost being killed in my garage by a ricoche and then later being shot with one at close range(alcohol was the priamry factor in that decision) I begin to look for other ammo. My friend and I found that bbs worked well (with paper as wadding), but the fun of blowing a cardbored boxes to pieces soon wore off. we then put bolts in the cannon, and these could easily peice a 1/4 peice of plywood and my garage door (that was an expensice mistake). Finnaly I put a 1/2 steel rod I had liying around in the cannon, and this was able to pierce a piece of 1/2 inch pywood from about 25 feet away.
here are some pics of SBC-500
Cannon with mag attachment
A closer look at the bolt and trigger(blow gun)
1/2 Piece of plywood after having 1/2 steel rod, lug nut, screwdriver, and a few bolts shot at it.
