Rim-Fire-Priming Tool Setter Job Description:

Sets up automatic machines to fill head cavity of rim-fire cartridge cases with explosive priming mixture: Installs and aligns knockout pins, primer-spreading punches, and shell-holding blocks, using handtools and gauges. Sets stops and cams to synchronize movements of feeding screws and rolls, shell-holding fingers, and ejection mechanism. Starts machine and examines primed cartridge cases for defects, such as dents, scratches, or unfilled head cavities. Cleans priming mixture from tools and machine bed, using air blast or vacuum hose. Dismantles machine to replace worn or broken parts.