bought some cheap sh!tty little spring powered bb gun from a toy shop like 3 years ago and it came with like a thousand or so of them; don't know where to get any more though...

so those bb's are smaller then those yellow plastic airsoft ones? I wouldn't mind basing my new gun off them- way more effective I'm guessing?

are you using bbs or airsoft bbs? because airsoft bbs should fit well inside 8mm aluminium tube because it has 1mm thick walls.
All I can tell you is that they're plastic and yellow...being in Australia, none of this stuff is exactly common/well known about because bb guns/airsoft is f@(%!#g ...

yeah I thought so; I did consider getting the tube I saw today, but I realised it would be worth waiting for some which is a much better fit, which would make this whole project actually worth going to the effort for!

well I had a look today at a couple of hardware stores at some aluminium tubing but the closest I could get was a bout 30% too big for a bb- is this the size aluminium you guys use, or is it tighter.
I'll still have a look at some brakeline when I ge a chance.

yeah cool, sounds simple enough

I reckon I'll get most of the stuff for this tomorrow, but I'm just wondering what sort of system I should use to keep the bb sitting in the barrel without rolling out?- I reckon I'll either go with the breach-loading design or some sort of magazine, if that works better.
look forward to your ideas ...

jackssmirkingrevenge wrote:Shouldn't that be "ya knacker"

..also good!

yeah I'd imagine it would require a fairly dangerously powerful spring to get good results; I'll stick with pneumatic as well I reckon...hope your finger's alright as well!

jackssmirkingrevenge wrote:

Twitcheth wrote:JSR are you aussie?

I thought I sounded more eloquent than that

yeah thanks for that comment ...ya testicle
...nah seriously though; don't spring powered air rifles generate like 4500psi with the piston?

apparently air conditioner compressors are pretty good too.

yeah, and what about having pressurised air pushing the pellets up into the barrel as well as/instead of the spring.
simple's good I reckon!

it's all good fellas; it's all part of what I'm asking anyway so no worries!

so s.man building a piston would be heaps better for performance etc. then a blowgun? it's it's heaps better I'll have a look at making one!
I'll also have to check out getting some brakeline soon; I don't really want to ...

thanks for the replies again guys;
yeah i realised it probably doesn't need to be semi-auto, just as long as i don't have to pump it up after each shot! cocking or whatever would be fine tho

schmanman- yours is heaps good man- it's a piston design tho right? i really can't be bothered with that ...

yeah man chuck up some plans on here- gun looks good by the way!

hey yeah I'll probably pump it up using a compressor plugged into the cigarette thing in my car- it's taken a marble cannon to 240psi before, so no worries!
nah no bb guns I'm afraid...that's what I get for living in Australia.
So I've heard brakeline would make a good barrel- where would I get this ...