Mec 410 Gauge Shotshell Reloading Die Set For Mec Mayville 600 Jr. Easily convert your MEC 600 Jr.
Mark 5 to another gauge with this affordable die set. Includes all the parts you need to complete the conversion along with complete, detailed instructions. Bushing, resize ring, deprime punch, reprime punch, wad guide, rammer tube, star crimp head, cam crimp assembly, and shell holder drop tube. Type: Shotshell Reloading Press Die.