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My Sniper

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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My Sniper

Unread postAuthor: fklco » Wed Dec 11, 2013 2:48 pm

My sniper unfinished

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fklco
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Re: My Sniper

Unread postAuthor: jrrdw » Wed Dec 11, 2013 5:33 pm

This deserves it's own topic +rep!
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When life gives you lemons...throw them back they suck!
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Re: My Sniper

Unread postAuthor: jackssmirkingrevenge » Thu Dec 12, 2013 6:05 am

jrrdw wrote:This deserves it's own topic +rep!


Yes it did! So nice to see a bolt action that doesn't have the whole barrel moving, and neatly cut, bravo!

I understand why the cat is looking worried :)
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Re: My Sniper

Unread postAuthor: fklco » Thu Dec 12, 2013 9:04 am

Thanks for points
I made this gun years ago.
The barrel are for paintball gun. (sniper type, I don't remember model )
I try to shut with paint-ball at 8 Bar pressure (120 psi) but the shock is to strong for paint-ball and explode in barrel, the maxim usable pressure is 6 Bar (80 psi).
The gun is very powerful, for bigger pressure I use reusable ball (from hard plastic, for security agent use, this ball are deadly are made from polycarbonate, but is very expensive ) I can rise the pressure until at 20 Bar (300 psi)(upper limit of QEV valve). At this pressure the recoil are very strong and the bang sound is amazing.

In inlet port of QEV I put a small QEV (plastic pice) to speed up a bit opening time, I use for trigger valve a small mechanical valve (4 mm orifice, not in picture).

I will come with picture of the valve and setings.
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Re: My Sniper

Unread postAuthor: wyz2285 » Thu Dec 12, 2013 12:14 pm

The barrel looks like the real thing... recycled from a large bore muzzle loader?
Interesting pilot (or its not there yet? I see one "port" of that thing behind QEV has a suppressor (at least looks like) but then there is the blue tube...)
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CpTn_lAw wrote::D "yay, me wanna make big multishot pnoob with 1000 psi foot pump compressor using diamond as main material. Do you think wet bread make good sealant? " :D
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Re: My Sniper

Unread postAuthor: fklco » Thu Dec 12, 2013 1:24 pm

wyz2285 wrote:The barrel looks like the real thing... recycled from a large bore muzzle loader?
Interesting pilot (or its not there yet? I see one "port" of that thing behind QEV has a suppressor (at least looks like) but then there is the blue tube...)


The gray plastic part is small QEV, the small QEV work like this, when blow the pressure air pass true, when release pressure air from big QEV go out from suppressor in atmosphere. This settings is for speed a bit the big QEV.

Barrel for paintball 20' long
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With trigger and pressure gauge.
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trigger
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QEV 1/2 - 1/4 - small 6mm (on line)
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Small QEV 6mm schematic made by SMC
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Last edited by jrrdw on Fri Dec 13, 2013 7:27 am, edited 1 time in total.
Reason: Double post.

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Re: My Sniper

Unread postAuthor: jackssmirkingrevenge » Thu Dec 12, 2013 1:58 pm

I thought it looked like a paintball barrel. What is the projectile, does it fit exactly in the barrel?

edit: nevermind, hadn't seen your reply.

You should really look into some sort of custom slugs to make full use of the power potential.
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Re: My Sniper

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Re: My Sniper

Unread postAuthor: fklco » Thu Dec 12, 2013 2:21 pm

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Jackssmirkingrevenge wrote:You should really look into some sort of custom slugs to make full use of the power potential.


Sorry for my poor English language, please explain my what means " custom slugs ".

Thanks
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Last edited by jrrdw on Fri Dec 13, 2013 7:32 am, edited 1 time in total.
Reason: Double posting, fixed quote tag.

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Re: My Sniper

Unread postAuthor: jackssmirkingrevenge » Thu Dec 12, 2013 2:31 pm

I mean you should make your own bullets, to make good use of the power available.

Here's a "no tool" method of making some destructive and accurate projectiles:

Cut a short section of barrel material, put it on a hard smooth surface, drop a suitable bolt in head first and fill the tube with hot glue. Make sure the inner surfaces of the tube are lubed up with something slippery first to help extraction.

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You can use epoxy or wax instead of hot glue.

Taofledermaus has a good video about making wax slugs:

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Re: My Sniper

Unread postAuthor: fklco » Thu Dec 12, 2013 2:52 pm

Waw !!! thanks, but I think is too match tor me I buid this rifle just for fun, have a lot of power with paint-ball, is too more for self defense, too dangerous.

For self defense I have my lovely C3 Propane :)
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