Using your tape measure, extend a 'shot' line from the cannon's barrel all the way to your target point. Roll the artillery dice and extend the line away from the cannon the number of inches shown – this is where your cannonball strikes the ground (see diagram below)

If you roll a misfire, something goes wrong when the cannon fires. You'll now need to roll on the Black Powder War Machine Misfire chart to discover the seriousness of the situation. Regardless of the result rolled, the cannon does not shoot this turn.