the gap between the videos is because I didn't put in enough BBs but that's one load of air.

Sorry to kick this up, just wanted to add a few videos I had made with this project:

[youtube][/youtube]

[youtube][/youtube]

[youtube][/youtube]

2 litres lasted me a good 4 seconds, we can extrapolate that simply to 24 seconds with your 12 litre setup - but again, this is going to be very bulky and not ideal for skrimishing, all this for performance that will be no better than a commercially purchased AEG.

This was my "standalone project" vortex design: http://www.spudfiles.com/forums/viewtopic.php?t=166& Only lasted a few seconds at 110 psi, total capacity was around 2 litres. For all the effort involved carting around a huge enough chamber for a worthwhile number of shots, you might as well invest i...