SpudFiles

Take a piece of pvc - go crazy with the diameter, but make it 2" long. The pvc, filled with bb's will be sealed at each end by the two part foam mixture (used by some boaters to fill a hole in the hull, keep buoys floating, etc). The bolt will be designed to extend the whole way through the pvc shell ejecting the bb's in a wonderous cloud of death . the bolt could be pneumatically powered or spring powered. (just a thought)

*edit the foam is called Urethane foam.

I dont think it would have any power if it was only 2" long

Yeah. This is called a sabot.

Ooh confused for a sec there, I thought he was talking about a shotgun type launcher as the title states.

Behold the marvelous word of "sabot". Yet another great addition to it.

with the urethane foam it would make a good club after you stick bolt threw it.

I think i'll just stick to a more simple approach.

Get one cotton wool ball, shove it down barrel.
Pour BB's down barrel.
Ram down another cotton wool ball.

Uhh I think that's it.

yeah, i like that^ one ...kitteh!