Thanks for the advice. I'll probably jsut make a cloud or vortex instead. I thought the air going over the hole would suck them up, kin of like on "Mythbusters" when they blew air over the hole in the aeroplane and the coloured smoke was drawn out.
Thanks for the advice anyway

Would it be more or less or aroun d the same power as a cloud?
I could beef up the size of the reservoir up. I wonder if there's a limit as to how big it is. I suppose if it was too big by the time it was nearly empty the BBs wouldn't be sucked out.
Thanks for the reply.

I've come up with a design for a BBMG. I've made a potato sniper rifle which is pretty cool, but now I fancy a crack at a BBMG
A magazine would have a BB sized hole in the barrel. The air traveling over the hole would suck the BBs up and out, then fly out along the barrel.
Would this work or not ...