Smithing steel cannonballs

⚠ This profit comes from buying, processing, and reselling on the Grand Exchange. It assumes large GE volume and can be inflated or volatile — treat it as a theoretical ceiling.

After completion of Dwarf Cannon, players can smith steel cannonballs, which is profitable since many players avoid the tedium of smithing them. One steel bar at 578 coins produces four cannonballs worth 980 coins total, thus producing 402…