Primer Inserting Machine Operator

Tend machines that insert and seat primers in center fire cartridge cases.

What does a Primer Inserting Machine Operator do?

Tends machine that inserts and seats primers in center fire cartridge cases and shotgun shells: Starts machine and feeds cases onto pins of rotating dial plate or fills hopper. Observes flow of primers and cases through feed tracks to detect malfunction or jamming of inserting and seating punches and ejection mechanism. Stops machine to remove jammed primers or cases, using fingers, and notifies PRIMER-INSERTING-MACHINE ADJUSTER of malfunction. Examines primed cases at ejection chute for defects, such as dents or scratches, and measures them for conformance to specifications, using fixed gauges. May tend machine that waterproofs cases [PRIMER-WATERPROOFING-MACHINE OPERATOR].