[HarryHirsch]

Someone (T.E. Lawrence?) said that beginners overestimate the amount of explosives needed to accomplish any given task.

That said, a standard-issue hand grenade weighs something like 450 g, of which 150 g is explosives. The shrapnel travels out to 15 m. I think the verdict is that with 30 g of payload an assassin needs to aim really well.

[stephengillie]

So most of the destructive power of grenades comes from the shrapnel? (I'm remembering a photo of a grenade cut in half.) What would that 150g of explosives do without the shrapnel shell?

How much shrapnel would a 285g quadcopter generate? What would be the effect of an external explosion on the lithium battery?

[dredmorbius]

C4 in a carbon-fiber tube with an open end plugged with wax and ball bearings would make a hell of a political statement.

Even shotgun shells, if you prefer your weaponization pre-fab.

[cinquemb]

>What would that 150g of explosives do without the shrapnel shell?

Most likely lower the kill zone < 5m, though if one wanted to not sacrifice that and shave off some weight they could use ceramic ball bearings[0].

[0] http://www.ebay.com/itm/10-pcs-Ceramic-Diff-Balls-Si3N4-5-32...