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Need barrel help

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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Need barrel help

Unread postAuthor: Dr Krieger » Thu Jun 05, 2014 1:50 pm

Hey guys,

I'm planning on designing a new airgun. My aim (no pun intended) is to make it quite accurate, I'm not too concerned about power. I'd like to make a group fit on a piece of A4 paper from 20 meters away, if that's reasonable. I'm planning on shooting .117 bb pellets. I was wondering if I need to get a rifled barrel to get decent accuracy or if I can get away with a smoothbore design.

Secondly, does anybody know a good source of piping that nicely fits a .177 bb pellet?

Thanks,

*SMOKEBOMB!*
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Re: Need barrel help

Unread postAuthor: jrrdw » Thu Jun 05, 2014 2:36 pm

Look below at the "Simlar Topics", there are 5 threads directly related to your questions. Also the "Spud Wiki", the button is at the top of the page.
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When life gives you lemons...throw them back they suck!
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Re: Need barrel help

Unread postAuthor: Boomer58cal » Thu Jun 05, 2014 9:45 pm

I bought this for $89 and I'm going to use the .177 barrel for a vortex BB machine gun.

You can buy a broken BB gun at a yard sale for $1 and cannibalize the barrel.
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Re: Need barrel help

Unread postAuthor: Brian the brain » Tue Jun 10, 2014 11:38 am

If he's an American...yes.

In the Netherlands you need to be 18+..

I've tried to find 4.5mm ( .177) tubing here and failed.
It would be better to find a small diameter tube, brass or aluminium, and then find bb's or pellets to match.
4.4...4.5...5.0....5.5...6.35mm

Tubing sizes vary, as you will see when measuring different samples.
Just try and find one with one of the above inner diameters and then order the pellets.

another option would be to order a replacement barrel.
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Gun Freak wrote:
Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!

Can't ask for a better compliment!!
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Re: Need barrel help

Unread postAuthor: jackssmirkingrevenge » Wed Jun 11, 2014 8:07 am

Brian the brain wrote:another option would be to order a replacement barrel.


Look for Crosman or Gamo replacement parts.
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