this is amazing. sad to see you got such a bad rap on hackaday - they seem to think it's really dangerous because of pressure and the general idea that something's bound to go wrong. but i think it's great as long as you built it well, which you definitely seem to have done.

however, there was one ...

i thought about this but this stainless steel doesnot magnet:(

I think i am missing something here...

Steel is made up of 2 things, iron and carbon. Stainless steel is steel with chromium. Iron is a ferromagnetic material. Logically anything that consists mostly of iron should be able to ...

For my gun i have the ammo held in place by the spring in the magazine.

If your just looking for potato cannon designs.. i made a full automatic air gun based off a larger potato cannon design.

http://www.spudfiles.com/forums/viewtopic.php?t=23527&sid=6790adff68a31fbae1b25ebda9ab97f5

http://www.youtube.com/watch?v=A6Gs2mKNjV0

And i am planing on making the same ...

WOW. that might be one of the best executed examples of full auto on this site...
Thanks! I am thinking about making another one... that can handle soda cans.

thought about using stabilized projectiles at all?
In fact i have been thinking of using wooden pegs as the projectile - and thinking ...

Mr.Tallahassee wrote:I fire my sprinkler valve at 125PSI quite regularly. Mine is a cheap offbeat valve too. I wouldn't go any above 125 though.

Nor should you as they are rated at 125 psi =D

Now you just need to get your ROF north of 20 RPS and get a force fed loader on there for paintballs, or spring fed for AA's.

I could increase the ROF by using the smaller tank i have on hand, but i would lose a lot of power.

I could also decrease the firing PSI down from 80 psi to 40 - but ...

Damn...

A SA/FA AA-battery gun has always been like one of my dream guns. Although after seeing the Nitron with its ball bearings... I'd probably go that route... plus it would be easier to adapt an existing paintball architecture to it.

I saw you initially posted this for shooting paintballs ...

I have uploaded a new video of me shooting this air gun at its max rate of fire - which is 600 rounds per minute.

link:

Looks cool! The problem with these homemade large bore BFBs that aren't made with lathes are that they have a lot of dead space. Not sure if it's harming performance though.

Altho it is true that i didn't have a lathe, i did have the next best thing(s) - A clear state of mind, patience, a power ...

I have uploaded some more pictures.

Thats quite awesome! could you tell me how it works?

the basic idea on how this works is; air comes and pushes a bolt forward, pushing a battery along with it, once the bolt is all the way forward air is allowed to flow though the bolt and push the battery out of the barrel. once the pressure ...

I understand teh semi, but how does the full auto works?

Full auto will only work if i add a little something to the trigger valve. As you can see i have a modified sprinkler valve - so i can use it without power. I have a BB being pushed against the exhaust hole on the bottom of my trigger valve ...

I built a full auto paintball gun using mostly PVC piping. I decided to modify it by rebuilding the bolt mechanize from the ground up. Now it can use double 'A' batteries as the projectile. I have a photo but i also made a few videos of it. General testing, RPM testing and range testing.

600 ...

Gun Freak wrote:You are fučking awesome.

I didn't watch the whole video (only 1 minute in fact) but I can assume it's a blow forward bolt. Sounds cool paint it!!!

You are right, it is a blow forward bolt.