"They are hollow, you see," said Dappa, picking one of them up with only modest effort, even though it was a good six inches in diameter. He spun it over between his hands to reveal a drilled orifice, and a spray of gray strings, radiating outwards, like meridians, to cover one hemisphere of its surface. "Hollow, so that they may be packed with powder. Otherwise, we’d be here all day trying to hit each other with a lucky shot. These shells will burst and kill anything within a few yards."