Air pressure cannon that shoots shotgun ammo

Building or modifying BB, Airsoft, and Pellet type of guns. Show off your custom designs, find tips and other discussion. Target practice only!
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jackssmirkingrevenge
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Tue Sep 30, 2008 9:47 pm

Hydra wrote:Usually UK standards are the same for Australia. So what jackssmirkingrevenge said was that you cant have more than 12ft/lb or something. (wtf is 12ft/lb)
As far as I know any airgun in Australia needs to have a police license, while in the UK the law is different - any airgun having a muzzle energy of less than 12 ft/lbs (for example 0.177 calibre firing an 8 grain pellet at around 800 feet per second, or 0.22 calibre firing a 16 grain pellet at around 550 feet per second) can be owned by anyone over 18 without a license. Anything capable of going over this energy limit however is considered legally to be a firearm and is subject to similar licensing restrictions to powder burners.
hectmarr wrote:You have to make many weapons, because this field is long and short life
Hannzy8664
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Tue Sep 30, 2008 10:19 pm

Lol. If they come round i will be like yer i only pump it up to 50psi. How far do you think that it would shoot? would it be powerful?
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jackssmirkingrevenge
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Tue Sep 30, 2008 10:23 pm

Hannzy8664 wrote:Lol. If they come round i will be like yer i only pump it up to 50psi. How far do you think that it would shoot? would it be powerful?
With a long enough barrel and big enough chamber, 50 psi will put a marble through half an inch of ply easily.
hectmarr wrote:You have to make many weapons, because this field is long and short life
Hannzy8664
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Wed Oct 01, 2008 1:00 am

Far out .. i thought 50 was like piss week lol. the chamber i am planning to use will be made out of about a 2 inch round PVC pipe. and the barrel will be about...... 19 inch what do you think about that?
Hannzy8664
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Wed Oct 01, 2008 4:50 pm

Thanks guys for helping me. But one more thing, what is the right pipe to use for the barrel of my marble shooter?
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