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paintball barrel size

Posted: Thu May 14, 2009 2:53 am
by beans
I made my cannon with a removable barrel for just this situation. I want to start shooting paintballs, but I have no idea how big they are and what size piping I should use. I'm cheap as hell so before I hit the stores I want to work a budget out...help please?

Posted: Thu May 14, 2009 3:21 am
by Biopyro
paintballs are .68 caliber, which is a good fit for 1/2" pipe (0.5" SDR 13.5)

Posted: Thu May 14, 2009 3:24 am
by beans
gracias. But what's SDR 13.5 mean?

forget it, found out. THanks

Posted: Thu May 14, 2009 6:41 am
by Demon
I use 3/4 inch CPVC pipe... And it fits very well( i shoot paintball at maximal velocity with 20 psi, a sprinkler valve and no wadding )

Posted: Thu May 14, 2009 8:03 am
by jeepkahn
3/4" sch120... if you're in the US and need some, pm me, I've got about 32' laying around...

Posted: Mon May 18, 2009 3:22 pm
by beans
quick questions, how well will a 1/2 copper barrel work? I'll use PVC if I have to, but my cannon is all copper right now and I'd like to keep it that way. And if 1/2 copper works, how can I fashion a breech loader for it? I don't have fancy tools and machines, so the simpler the better.

Posted: Mon May 18, 2009 3:27 pm
by Biopyro
I can't find the exact diameter now, but I would guess they aren;t going to be such a good fit.

For the breech, you can cut a hole in the pipe and slide a slip coupling over it for the most basic way. Search the displays for ideas.

Posted: Mon May 18, 2009 3:34 pm
by beans
would I have to put something to make it snug or would just having it covering the hole suffice? I think I might just buy some paintballs and take one to the hardware store and do a fit.

Posted: Mon May 18, 2009 3:41 pm
by Biopyro
Good idea doing the fit. That always works well for me :) O-rings would help, but aren't necessary, depends how advanced you want it. Type breech in the search and have a look at ideas!!