Mini BB coaxail-full metal

[qwerty]

Here is my new and first piston BB coax made with 15mm copper and some other parts.
I struggled to get this to work but finally wrapped some tape around the piston.
Strangly enough you can fill it up from the barrel aswell
Any tips welcome.
Here are the pics.



































There!

[twizi]

whats the piston made of

[qwerty]

Two little car wheels glued together

[qwerty]

Update! Damage pics I chronied this at 100 PSI and i got 521fps
BTW that wood is 3mm thick

This was by accident after going through an apple



Pin through a penny




and...... a box



ive ordered this shock pump and i cant wait for it to arrive.
http://www.chainreactioncycles.com/Mode ... elID=38214


Im getting a solid nylon piston off wildebeers so i can use that at 300 PSI

[rna_duelers]

Now that's cool.How does it go with sinkers or similar heavy shot?If you've used ammo like that.

I've got to make myself a small bore pneumatic sometime nice simple and a bit of power

[qwerty]

Thanks ive only used bbs at the moment because i cant find the fishing shot
and ive allready used up the 6mm ones for other guns

(Which is better FORE!!!!s or mine)

[FORE!!!!]

Thanks ive only used bbs at the moment because i cant find the fishing shot
and ive allready used up the 6mm ones for other guns

(Which is better FORE!!!!s or mine)

I smell a showdown

[inonickname]

Thanks ive only used bbs at the moment because i cant find the fishing shot
and ive allready used up the 6mm ones for other guns

(Which is better FORE!!!!s or mine)

I smell a showdown

Can I join in? I just finished and tested my co-ax..

[FORE!!!!]

GULP!!

[qwerty]

Can I join in? I just finished and tested my co-ax.. Laughing

Show us a pic then we will decide.

[inonickname]

I'll post it tomorrow after more tests (400 psi).

You can have a sneak peak I suppose..I still need to cast the aluminum foregrip, grip, bipod etc..


Piston and barrel support, with chamber and barrel in background..

[qwerty]

Ummmmmmmm.......... no

[FORE!!!!]

@qwerty
what pressures are u using??

and what is the bore size of ur barrel?

[qwerty]

At the moment im using around 100 psi and its 6mm barrel.
but did you see that shock pump i put on?
I cant wait for some 300psi damage pics with a solid nylon piston

[inonickname]

It's pretty devastating even with the low (300 psi) pressure..400 should be monstrous.

It's been punching nice holes in everything I've thrown at it, any requests for targets?