see http://www.spudfiles.com/forums/12-gram-co2-adapter-t16812.html

problems:
fast release of co2 led to overwhelming of the modded sprinkler valve- corrected bby putting a brass ball valve in front of the adapter
decompressing co2 can make get cold- I would reccomend a metal gun, unless your ...

thanks, search never turn up results for me

I was looking to buy a "super-quick exhaust valve" from this website:
http://airinc.thomasnet.com/item/specialty-valves-acc-/super-quick-exhaust-valves/qe5?&seo=110
I have never used a QEV (or piston) valve and had some questions. If there is a page that explains these, by all means just refer me ...

Yo thanks - found goathunter's gun may use an o-ring

I will have a pressure chamber, just left it off the drawing for clarity

The 20 Gauge shells fit very well, but I have had 1/2 pipe that have slightly different IDs and you might need one wrap of tape or something.

Found it - adapter at http://www.totalpaintballgear.com/products/brass-eagle-12-gram-quick-change-adapter--.html

ASA to 1/8 NPT at http://www.palmer-pursuit.com/cart/index.php?main_page=product_info&products_id=223

BTW - if I decided to use CO2 12 grams, it would be a back-up/portable system ...

alright, after finding out a spent 20 gauge shell make a perfect "shell" for 1/2" pipe (because of the flange at the end) I decided to make a break-action shotgun. Have never made one.

It looks simple enough to build, but i dont know about the seal in between the barrel and the other bit (where it ...

Huzzah!

After messing around with easily available/easily made reusable shells, i just realized that a 20 Gauge Shotgun shell (empty, of course) fits perfectly into 1/2" Sch. 80 (1/2 'Thinwall') perfectly, up til the little metal flange at the end, which stops it from coming out when the gun is ...

Thanks hubb017

But wait - does the quick change adapter screw directly into 1/8 NPT, or does is go through the ASA fitting???

Confused

might make it steel or copper cheeseboy

Alright -

I was looking on spudtech.com the other day and say a small gun, called the "TBL250LP", used to launch tennis balls

It had a 12 gram CO2 adapter glued directley into the chamber.

The pictures are indistinct, but it looks like a steel threaded piece sautered to a copper elbow

does ...

I dont think the Minie ball is real; its a replica.

Me not shoot artifacts!

1. FOund a War Between the States "minie ball" in my room. Think its lead, but not sure. fit with a little cotton waddin into a 1/2" SCH 40 Barrel. Hevent shot yet cause I only got one and want to find more. Should werk really good.

2. Some kid threw his toy matchbox car into my fire the other day ...

1. FOund a War Between the States "minie ball" in my room. Think its lead, but not sure. fit with a little cotton waddin into a 1/2" SCH 40 Barrel. Hevent shot yet cause I only got one and want to find more. Should werk really good.

2. Some kid threw his toy matchbox car into my fire the other day ...

Found out 1/2" inch thinwall PVC is the same inside diametre as a twelve-gauge shotgun. Cut a shell apart to get the birdshot, realised the plastic wad fit in the barrel. Fill with BB's and put tissue over one end, or fill with any small, irregulat objects. for breechloaders and semi-automatics ...

I haven't tried to make a multi-shot cannon before, and i have some questions.

First off, would this design work? I would close the valve to the barrel, opent the valve to the main air champer, and pressurize the "dead space" Then close the valve to the air chamber and fire by opening the valve to ...

Slightly dangerous, but the skinny propane bottles fit perfect in 3" pipe.

I try to use empty ones.