SpudFiles

I'm going to try to describe this as best as I can. Picture three congruent cylinders about 1 foot long all lined up and strapped together. On one end your choice of filling the cylinders (i.e. bike pump, compressor, a valve type thing) and on the other a lever to release that gas or contain that gas such as a ball valve or simply a lever valve. The lever valve connects to a 1/4 barb used for most triggers on the sprinkler valve mods. The barbs will connect a hose on, and the 3 hoses will all connect together with a type of 4 connector thing that might exist or i will have to heat shrink or melt them into each other. that single hose extends over your shoulder a point on your cannon that you select (bottom of the stock in my case) using another barb. Just in case you didn't catch that, the 3 cylinders will be a backpack type idea.

This will do two and a half key things:
1) Allow more than one shot per fill up
2) Put the weight of the cylinders on your back
3) For those of you who know what scenario paintball is, they typically use a LAW rocket launcher which I have tried to recreate but i see huge flaws in the safety aspect w/out the use of expensive regulators (copper shrapnel.) Anywayz, this will allow you to take your cannon on the field providing you have the right size barrel to fire the laws (aka nerf footballs)

All suggestions are welcome. I'm sick of refilling after every shot.

For the amount of tees and hose you will need and pipe you could probably buy a decent C02 reg. And that would save you the weight and bulkiness of lugging around a backpack. It just seems to be one of those things were you might as well bite the bullet and get a reg.

If you're using copper pipe and pressure fittings and 95/5 tin/antimony solder, you don't need to worry about the copper failing, even at the full tank pressure of the CO2. Even Type M copper (one of the thinnest kinds) in any easily available sizes will usually fail at over 3 000 psi, so you don't need to worry about the CO2 tank causing it to burst without a reg.