"Er, right, you lot still use the round ones. Forget I said anything, won't you? Secrets, and all that." He doesn't seem at all sheepish about it, though. "On an entirely unrelated note, I will share the observation that an arrow flies truer than even a spherical slingstone."
"Noted," you say, watching as another cargo of the... cannonbolts? be carried past.
"Right, might want to cover your ears," Narfi observes, and you follow his gaze to a long line of cannon, each with a Dwarf holding up a hand to signify his readiness to fire. You cover your ears with your hands.