To fire the Helblaster Volley gun, select a target according to the normal rules for shooting, then roll three artillery dice to find out how many shots are fired. If one of the dice rolls a misfire, halve the results of the remaining two artillery dice to determine how many shots are fired. If two of the dice roll a misfire, roll a D6 and consult the Black Powder Misfire Chart in the Warhammer rulebook. If all three dice roll a misfire, the Helblaster Volley Gun fires 30 shots, but is removed as a casualty once they have been resolved. If no misfires are rolled, the number of shots fired is equal to the total of all the dice rolled. After determining how many shots are fired, roll To Hit the target with an equivalent number of dice, resolving any successful hits using the profile given below.