I have looked at the site and they really dont explain enough. If they have a way of reloading the weapon without changing the barrel or having to reload bullet by bullet that would be good. I'm not saying I dont like the idea of this technology but as they've described it I dont see how it could replace artillery or even smg's or pistols.
Does anyone know how they load the bullets into the barrels in the first place?
My impression is that you load a "rack of barrels" at a time. A stack of them perhaps 6 or 8 tall - all with rounds preloaded. I also beleive that these barrels are not the treated and forged steel barrels of current weapons. since each round carries its own propellant/charge, they are more like mini-rocket tubes, and thus can be made much lighter than steel barrels of your standard machine gun - or field gun for that matter.
Perhaps you didn't get a chance to look at the video - its under Technical Demonstration. Takes 9 minutes (streaming video)and explains much of the technology.