Yeah, thats the only problem I had to making an AK-47 with 30 bullets or whatever, I would like a way to store the energy in those stacked up balls.
Also i've found something quite useful when making schtuff.
If you make two shapes, put a box overlapping them, fixate at either end then erase said box, the two shapes still act as if they are connected, i've already thougt of some schtuff to do with this, may be of help to you people :p