How to make a very powerful BB gun

This is a picture instructable og how to make a very powerful softgun.
the softgun shoots 200 m/s+
SEE THIS LINK FOR A DEMONSTRATION http://www.youtube.com/user/sabladask?feature=mhum#p/a/u/0/ff4Q81E9f4w

Warning!!! I take no responsabilty for you, or your actions and pease, be safe! Never point it at something that can break or someone. be careful!

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Step 1: This is how it works.

the drawing is not so good but hope you understand.
i drawed it in paint :P

mr.pizza says: Jul 1, 2012. 4:00 PM

i am working on one based of this design except it has a bb resevoir shotgun style pump action and a diffrent frame

adrienriaca says: Dec 29, 2011. 2:17 AM

please give more detail about these pictures

Will Wilding-Taylor says: Aug 25, 2011. 10:13 AM

hey can you help me was the bike pump like a foot pump or one of those tube like ones. also where is the spring in the umbrella !
please help !!!

sabladask (author) in reply to Will Wilding-TaylorSep 3, 2011. 11:53 AM

it's the small tubelike pump:) and the spring is in most automatic umbrellas, the spring is easy to locate if you have the right umbrella

vvdemonninjavv says: Jun 2, 2011. 10:10 AM

Can you please upload more photos? its a little hard to understand..

cam.dav32 says: Apr 19, 2011. 1:51 PM

Great idea, I have designed a similar paintball shooting one like this "I have in fact made a Google sketchup model of it so if you have Google sketchup have a look at "homemade spring paintball gun" on the 3d warehouse, its pretty cool) but the idea never got off the ground as I never had a powerful enough spring.

sabladask (author) in reply to cam.dav32Apr 20, 2011. 8:06 AM

cool, wil take a look at your gun!
you can actually find very strong springs in some type of umbrellas. that's where I had got mine from.

thyyt1 says: Mar 24, 2011. 2:57 AM

how do you load the bb, through the barrel?

sabladask (author) in reply to thyyt1Mar 24, 2011. 12:29 PM

I used a stick to push the bb down ..lol:)
,but i have made a new softgun whit a magazine that charges itself.

thyyt1 in reply to sabladaskMar 28, 2011. 3:19 AM

you should chuck a picture up, i have an idea to make a mag that reloads when you cock the spring, i haven't made it but i think i will when i get a chance