Information Source: Lee Precision


Auto Prime broken lever

The Auto Prime gives its user a good "feel" for primer insertion.  You should be able to feel through the lever when the primer is seated in the case.  No further pressure on the lever is required.  If you press the lever until it contacts the body, it will eventually break.  Apply a high viscosity lube (lithium grease, Vaseline, etc.) to the ends of the connecting link before replacing the lever.