I just visted WARPIG this morning and found this new design for paintballs in thier tech section. They are called First Strike. The new design is very different and might yield some good results. They kinda look like an ordinary bullet in shape with the paint load in the front half only. The fill is thicker and chalky which would make it harder to "wipe off".
From what I read this migt be the next big thng if loaders and markers can be mass produced that will fit the new design without a expensive conversion that will be needed on current eqipment. Finally the problem of useing "riffeling" looks to have been solved!
Check this new design out on WARPIGS site!!