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M25 Sniper potato rifle !

Built a pneumatic cannon? 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: thewebb1023 » Wed Jun 17, 2009 1:55 am

Very nice. Clean, nice looking and I really like the foam "suppresour".
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Unread postAuthor: jmadden91 » Wed Jun 17, 2009 2:01 am

Mate this is going to get you in trouble lol. Dont go around kicking up old topics like this one :lol:
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Unread postAuthor: inonickname » Wed Jun 17, 2009 3:19 am

Oh come on all these new guys. You haven't caught up to mike yet but everyone;

Please stop bumping old topics!
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Unread postAuthor: THUNDERLORD » Wed Jun 17, 2009 9:55 am

Seems like a good one to kick up though. :)
Just skimmed through the 6 pages and noticed noone had linked to Must be His video I was actually looking for that vid for ideas on a piston and bumper for my own brass design.

I have a 3/4" cast brass "T",
a 3/4-1/2" reducer coupling,
a 1/2" edit:x 2.5" nipple (threaded from inside) (perfect half-way position and adjustable),
a 3/4" close nipple (attaches reducer coupling to front of "T" and 1/2" nipple that will contain BFB fits inside to thread into 1/2" part of coupling)
a 1/2"-3/8" reducer bushing (threaded front of reducer coupling for magazine/ barrel attachment/ front of Blow-forward-bolt).
Planning on using another "T" below that and small brass chamber.


Also, I was trying to decide if it should fill on side of a tiny "T", pilot on right "T" and thread to back of piston/BFB housing ,
OR just fill into the front of chamber(???)
Looks like his does well filling on front of chamber though. :wink:

For testing I will probably use my fridge compressor and create a temporary pilot (trigger) using the top of sawn-off threaded type CO2 cartridge (epoxied to reducer bushing, back of 3/4" "T"),
and the top of my CO2 bike tyre filler (valve).
It will be 3/8" ID bore.
BTW, Later I will test a PB gun (with dummy cO2 cart.) for pilot, and get a semi or 3 shot burst one or maybe a use Drozd (sp.),if it works for the pilot. :D :wink: 8)
Awesome thread to "kick-up" IMO.

EDIT: :oops: edited some measurements because all my parts are stuck together now...LOL...they'll get cut down,adjusted and fitted better, with less exposed threads anyway soon.
EDIT2:another vid! (piston looks like a sanded down garden hose cap(?)
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Re: M25 Sniper potato rifle !

Unread postAuthor: Knotz » Thu Jun 18, 2009 7:53 pm

spike33 wrote:hi , i want to show you , one of my best airgun ,

there is a 1 meter x 18mm barrel
with a wood bolt action system
the air tank is a coca bottle at 8 bars ( 1.5litres or 0.5 )
i shoot potato and battery
he have a QEV system

on the video i shoot at a a4 paper at 10 meter :



Image
Image
Image
Image


http://fr.youtube.com/watch?v=KU2Tfrw6HPE


Love the gun man nice job on it only thing that bugs me is that soda bottle but if you dont my me askigng. is it possible to get that kinda of blow gun in america?
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Unread postAuthor: Hotwired » Thu Jun 18, 2009 10:01 pm

You are aware he's in France? :idea:
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Unread postAuthor: Knotz » Thu Jun 18, 2009 10:03 pm

Hotwired wrote:You are aware he's in France? :idea:


yea i figured that out like 5mins after the post lol
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Unread postAuthor: Knotz » Thu Jun 18, 2009 10:11 pm

only thing is i have kno idea how to contruct a propper pneumatic chamber other than that my gun project will be under way

all i need to know is how to make a blow gun connection and connect it to the bolt action part of the barrel
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Unread postAuthor: maverik94 » Thu Jun 18, 2009 10:20 pm

2 liter bottle=disaster, seriously. Other than that, nice gun
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Unread postAuthor: partyars » Sat Jul 25, 2009 9:00 pm

u should make the chamber out of something else, like a fire extinquisher or something metal, so u can add more pressure
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Unread postAuthor: Mateo » Sat Jul 25, 2009 9:56 pm

partyars: that gun was built over a year ago... now he has a very nicely built small caliber rifle. i dont even think that this cannon is in one piece anymore haha.

his nice cannon
http://www.youtube.com/watch?v=8YjA6nZzXMg

[/youtube]
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Unread postAuthor: partyars » Sun Jul 26, 2009 10:37 am

yeah nice
i dint knew this one was old, i signed up yestrday :D

grttz
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Unread postAuthor: Ragnarok » Sun Jul 26, 2009 11:19 am

partyars wrote:I didn't know this one was old, I signed up yesterday.

That's why we have dates above the posts, to tell you when they were written.
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Does that thing kinda look like a big cat to you?
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Unread postAuthor: al-xg » Mon Jul 27, 2009 4:58 pm

Even that video is over a year old ;)
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Unread postAuthor: 30cal man » Mon Jul 27, 2009 6:26 pm

that looks very sweet you should put a stock on it though it has a nice rifle look but is missing the shoulder stock
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