Bronze cannonball

Bronze Cannonball is a members-only item on the OSRS Grand Exchange in the bars category.

In-game examine text: "Ammo suited for a boat's cannon."

It has a Grand Exchange buy limit of 11,000 every four hours, a high alchemy value of 1 gp, and item ID 31906.

View on OSRS Wiki

Bronze Cannonball shows an active flip setup with a margin of +1 gp and 481,339 trades over the last 24 hours.

At the buy limit of 11,000 every four hours, max profit per cycle is about 11.0k gp — high margin with healthy liquidity.