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burst disk cartridge idea

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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Unread postAuthor: jackssmirkingrevenge » Sun Feb 17, 2008 8:42 am

ant wrote:the barrel in this vid moves as well, damn!


That's how the Glock works, the barrel swings down to unlock it and eject the spent cartridge.

[youtube]http://youtube.com/watch?v=iPPgmvcsJNw[/youtube]
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Unread postAuthor: Antonio » Sun Feb 17, 2008 9:08 am

[quote="jackssmirkingrevenge"]That's how the Glock works, the barrel swings down to unlock it and eject the spent cartridge.

[quote]

Ah k cool. I didnt know it worked like that. It doesnt seem good for wear and tare'' though.
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Unread postAuthor: jackssmirkingrevenge » Sun Feb 17, 2008 9:32 am

ant wrote:It doesnt seem good for wear and tear though.


Glock pistols are known for their reliability, I don't think the wear and tear is an issue - the problems start when you mount a long silencer on it, I've seen pictures of Glock silencers with extra holes in them :roll:
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Unread postAuthor: Ragnarok » Sun Feb 17, 2008 11:39 am

ant wrote:It doesnt seem good for wear and tear though.

My primary concern would more be how it affected accuracy. Something like the Deagle is known for accuracy (assuming the user can handle the recoil), due to it's fixed barrel and polygonal rifling.

Something with a barrel that moves around isn't going to help groupings. Small changes in the barrels initial position will affect things.
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Unread postAuthor: ShowNoMercy » Sun Feb 17, 2008 11:45 am

All auto loading firearms will be like that though, the opening in the barrel will be slightly larger tolerances so the bullets wont jam, versus a bolt action having a tighter tolerance which would also lead to slightly better accuracy. But i think it comes down to the shooter, like you said the Deagle has a better fixed barrel, put have you ever shot one? Trying to get off repeated shots are going to be harder due to the recoil and jump.
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Unread postAuthor: Sticky_Tape » Sun Feb 17, 2008 11:48 am

yeah you should just go with bolt action.
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Unread postAuthor: VH_man » Sun Feb 17, 2008 12:08 pm

i think this is off topic but what the hell.....

What about the recoil system on a Beretta, where the barrel unlocks. I have the Airsoft gas blowback version of that gun and it is VERY reliable. (if you could find an animation that would be crazy because... berettas own)

My friends Airsoft Glock doesnt have the barrel kick upwards like that......... thats depressing.
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Unread postAuthor: POLAND_SPUD » Sun Feb 17, 2008 12:10 pm

intrisic inaccuracy of most modern rifles is minimal... well it is always better to blame the gun isn't ? :D

it is a pity this doesn't apply to spudguns :roll: we don't even use rifled barrels...
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Unread postAuthor: Sticky_Tape » Sun Feb 17, 2008 12:29 pm

did you ever go on spud tech? they sell rifled barrels.
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Unread postAuthor: Ragnarok » Sun Feb 17, 2008 1:23 pm

@VH_man: I'm sure that the airsoft replica's operation bears no relation to the real steel's version.

@ShowNoMercy: Hardly. Never shot more than .22 LR (SMLE No.8 training rifle), 5.56 NATO (L98A1), 12 gauge (not sure of type, some side-by-side break barrel) and pellet rifles - never fired any pistols, although I was once shown how to disassemble, load (with empty magazines) and "fire" a Browning 9mm.

However, although I've not shot anything other than my launchers in years, I was always a reasonably good shot of about 2 or 3 MOA.

Personally, if I were to have a pistol, my choice would certainly not be the Desert Eagle. I know almost exactly what my criteria would be.
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Unread postAuthor: ShowNoMercy » Sun Feb 17, 2008 1:27 pm

Well considering the cha ching noise every time you shot the 50 cal, its relatively impractical for just about everything. I would love to get a colt 1911 like mr pete.
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Unread postAuthor: POLAND_SPUD » Sun Feb 17, 2008 1:33 pm

yeah I know they sell rifled barrels.... but how many spudguns here acctually have them ?
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Unread postAuthor: VH_man » Sun Feb 17, 2008 4:11 pm

Rag: I have compared my airsoft gun to the real steel gun and the operation is the same on both.

wasnt "the judge" selling rifled barrels? if he still is id like to pick one up.
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Unread postAuthor: Sticky_Tape » Sun Feb 17, 2008 5:06 pm

Ok this thread was high jacked now lets get back on topic JSR do you have any writen up plans for the gun that will use these shells?
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Unread postAuthor: jackssmirkingrevenge » Sun Feb 17, 2008 9:57 pm

Ragnarok wrote:My primary concern would more be how it affected accuracy.


This isn't a sniper rifle, supreme accuracy isn't as much of a concern as reliability, wounding capability and magazine capacity.

do you have any writen up plans for the gun that will use these shells?


Aside from the breech detail in the original diagram, I haven't made plans - because the launcher I had in mind would be identical to any simple open bolt direct blowback submachinegun like the Sten.
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