When shooting a Helblaster Volley Gun, roll three Artillery dice before making any rolls To Hit. The number of shots fired is equal to the total of all three Artillery dice:

• If a Misfire is rolled on one of the Artillery dice, all shots fired from the Helblaster Volley Gun this turn suffer an additional -1 To Hit modifier.

• If a Misfire is rolled on two of the Artillery dice, no shots are fired and a critical fault has occurred. Roll immediately on the appropriate Misfire table to determine exactly what.

• If a Misfire is rolled on all three of the Artillery dice, all of the barrels fire simultaneously, with devastating effect. The Helblaster Volley Gun fires 30 shots, but is destroyed and immediately removed from play. All shots fired from the Helblaster Volley Gun this turn suffer an additional -1 To Hit modifier.

After determining the number of shots, roll To Hit for each as normal, using the crew's Ballistic Skill and applying all appropriate modifiers.