Mec 650 Primer Seating - Assembly 12 Ga.

The MEC 650 Primer Seating Assembly 12 Ga. is a precision replacement component engineered for reloaders who depend on pre-1985 progressive reloading machines. This specialized primer seating assembly restores the original priming function to MEC 650 and 8567 progressive presses, making it essential maintenance for shooters who reload high volumes of 12-gauge shotgun ammunition. Whether you're a competitive clay target shooter or a serious waterfowl hunter, maintaining reliable primer seating ensures consistent ignition and safe ammunition performance downrange.

This complete assembly comprises four critical components: the seating post, compression spring, guide rod, and seating pad—each precisely manufactured to OEM specifications. The spring mechanism applies consistent downward force during the repriming cycle, while the guide ensures the primer sits perfectly aligned within the shell pocket. The seating pad itself contacts the primer cup with exact geometry, preventing crushing or off-center seating that could cause misfires or dangerous pressure anomalies. Compact at just 0.24 lbs and fitting standard 12-gauge shell dimensions, this assembly integrates seamlessly into your existing MEC progressive setup without requiring frame modification.

Reloaders operating legacy MEC presses appreciate this assembly for its straightforward installation and compatibility with both 650 and 8567 models manufactured before 1985. If your press exhibits weak or inconsistent primer seating, delayed ignition on the first shot, or visible primer backing-out during firing, this assembly addresses those symptoms directly. Installation requires basic hand tools and takes under an hour; no gunsmithing experience necessary. Keep this component on hand as preventive maintenance, or order it now to restore your trusted press to factory performance standards.