A professional who tends battery of automatic machines that assemble shotgun shells and print load information on shell body. Responsibilities include:

• Starts machine and observes operation for jams in hoppers, feed tubes and channels, rotary feed plates, and loading and crimping mechanisms.
• Removes jammed shell components, using fingers or wire hook.
• Examines samples of completed shells at specified intervals to detect incomplete crimping, bulging wads, and blurred printing.
• Measures length, head thickness, and diameter, using fixed gauges.
• Cuts open shell with knife and weighs powder and shot charge on grain scale to ensure charges are within specified limits and wads are correctly placed within shells.
• Periodically obstructs flow of powder and wads to ensure that automatic warning devices are functioning.
• Communicates with hopper feeder and packing workers regarding operational difficulties, quality, quantity, and changeover of shells that corrective action may be taken, using intercom system.
• Cleans machines of powder, shot, and scrap, using brush and vacuum cleaner.
• Notifies loading-machine tool-setter of machine malfunctioning.