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Alright, dunno if anyone knows about Caseless rounds, or if what i'm about to try to explain is even remotely correct but i'm going to give it a try.

Caseless rounds are in a sense less expensive compared to having a bullet cosisting of case, primer, powder, and round. A caseless round is pretty much the round inside a jacket of some sort that has a primer that is ignited electrically to propell the round. Given the lack of the brass casing this allows for smaller magazines, less ammo weight and a few other beneficial things.

The draw back is that caseless rounds are easier to cook-off, the occurance where a bullet becomes hot enough to discharge and fire itself, and they aren't exactly as sturdy as a cased round, caseless rounds are much easier to damage. So pro and con its hard to tell wether a caseless round is truly better than the run of the mill cased round. compactness and lower cost to make them may be true, but the risk of them cooking off and or breaking aren't all that good a thing to have happen.

For this caseless round I figured I'd take an approach like you'd see shotgun shells have for they little plastic part that contains the shot itself, cept a little more sturdier and longer. had I copy and pasted, then flipped a second caseless round you'd be able to see the cap on the end that is hit with an specific electrical charge to set off the round.

Other than what is above can't think of much else to make mention of.

Modeled in Google Sketchup 7.
Modeled by

Enjoy~