Shooting Weapon.
Range 12″, Shots D6, Lightning Attacks, March and Shoot, Mishap (Roll for number of Shots), Reload!. The attacks hit automatically.
Trial and Terror: The weapon instead targets and automatically hits all units within 6″ (including units not inside the Front Arc/Line of Sight, and units Engaged in Combat) except the shooting unit itself (remember that models that are Engaged in Combat cannot perform Shooting Attacks). Roll once for the number of shots and apply this value to all targeted units, then roll for the Strength of the hits for each targeted unit individually.
These shots are not randomised using the rules for Callous.