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Deathray MP now running on unregged 12 gram!!

Built a BB Machine Gun? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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Unread postAuthor: jackssmirkingrevenge » Mon Mar 31, 2008 2:17 am

Lead BBs would be a better option for power, of course you can only use them once as the get deformed but their higher sectional density means they are more efficient in the barrel, giving you a greater muzzle energy, and they will retain that energy for longer - plus of course they will take advantage of a rifled barrel if you have access to one.
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Unread postAuthor: Brian the brain » Mon Mar 31, 2008 2:27 am

Lead BBs would be a better option for power, of course you can only use them once as the get deformed but their higher sectional density means they are more efficient in the barrel, giving you a greater muzzle energy, and they will retain that energy for longer - plus of course they will take advantage of a rifled barrel if you have access to one.


Duh!

:D

Waiting for a tax return and I'll get one off an auction site.
A break barrel air rifle that is.
And stick the stock onto Overkill muhahaha
( not serious...)
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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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Unread postAuthor: Davidvaini » Mon Mar 31, 2008 2:27 am

quick question... about how long can you fire this thing before it runs out of pressure?
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Unread postAuthor: Brian the brain » Mon Mar 31, 2008 2:34 am

Now I'm filling it with air..
3 seconds of BTB approved firing :D
Then about three more seconds of I imagine "ouchy :shock: " shots, and then about two seconds of..hey, did you hit me or not? :roll:

Something like that..Pressure drops pretty fast.
Unregged CO2 will up performance quite a bit.
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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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Unread postAuthor: MrCrowley » Mon Mar 31, 2008 2:40 am

Brian the brain wrote:Now I'm filling it with air..
3 seconds of BTB approved firing :D
Then about three more seconds of I imagine "ouchy :shock: " shots, and then about two seconds of..hey, did you hit me or not? :roll:

Something like that..Pressure drops pretty fast.
Unregged CO2 will up performance quite a bit.

<A HREF="http://www.google.nl/search?hl=nl&q=nitrogen+supplier&btnG=Google+zoeken&meta=cr%3DcountryNL">Pfft, CO2 is for wussy's</a> :)
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Unread postAuthor: jackssmirkingrevenge » Mon Mar 31, 2008 2:49 am

MrCrowley wrote:<A HREF="http://www.google.nl/search?hl=nl&q=nitrogen+supplier&btnG=Google+zoeken&meta=cr%3DcountryNL">Pfft, CO2 is for wussy's</a> :)


So is nitrogen ;P
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Unread postAuthor: Brian the brain » Mon Mar 31, 2008 2:53 am

hahaha.
Care to repeat that when I'm pointing the red little dot at your eyelid??


But ...what presssure is helium normally stored at?
The handle can take 230 bar safe...
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Can't ask for a better compliment!!
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Unread postAuthor: MrCrowley » Mon Mar 31, 2008 2:55 am

jackssmirkingrevenge wrote:
MrCrowley wrote:<A HREF="http://www.google.nl/search?hl=nl&q=nitrogen+supplier&btnG=Google+zoeken&meta=cr%3DcountryNL">Pfft, CO2 is for wussy's</a> :)


So is nitrogen ;P


Curses, now why didn't I think of that :roll:
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Unread postAuthor: jackssmirkingrevenge » Mon Mar 31, 2008 3:00 am

Brian the brain wrote:But ...what presssure is helium normally stored at?
The handle can take 230 bar safe...


That's not really an issue. My SCUBA tank is filled to 300 bar, I fill my rifles to 230-200 bar using the tank's own regulator.
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Unread postAuthor: Brian the brain » Mon Mar 31, 2008 3:06 am

Mmm...nah, I'll just go with wussy unregged CO2..
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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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Unread postAuthor: jackssmirkingrevenge » Mon Mar 31, 2008 3:08 am

You might want to consider some sort of insulated jacket for the tank, since you're essentially just dumping CO<sub>2</sub> it might lead to freezing problems.
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Unread postAuthor: Brian the brain » Mon Mar 31, 2008 3:14 am

A jacket, full metal or otherwise..Now that is for wussies! :D

Do CO2 fire extinquishers freeze up?

Freezing up indicates the presence of water, wich would mean I'd have to get a CO2 AND a water refill..?? :roll:
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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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Unread postAuthor: MrCrowley » Mon Mar 31, 2008 3:17 am

jackssmirkingrevenge wrote:You might want to consider some sort of insulated jacket for the tank, since you're essentially just dumping CO<sub>2</sub> it might lead to freezing problems.

Such as, Exhibit A:
Image


:D


Is there much loss in power with the supressor on?
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Unread postAuthor: Brian the brain » Mon Mar 31, 2008 3:20 am

Yet to try with a full tank..I imagine it will cost me some performance.
The silencer might create a little cusion of air in front of the bb.
It's just one of those-got to make it- things cause it's cool.

The noise is not so bad, and ofcourse unidentifiable to neighbours without it, so no problem.
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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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Unread postAuthor: jackssmirkingrevenge » Mon Mar 31, 2008 3:22 am

MrCrowley wrote:Such as, Exhibit A



Image

:D :D :D
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