Place cartridge with a spent primer on depriming
Place depriming pin into the flash hole in the cartridge.
Push the depriming rod back into the handle
Tilt wrist back to keep deprimer rod in the handle and squeeze the lever.The primer will pop out easily when the pin is inserted correctly in the flash hole.
When the spent primer pops out, relax your grip, tilt wrist forward and the deprimed cartridge can be removed.
An occasional cleaning may be required to remove primer debris from the moving parts. Pressurized air such as used to clean keyboards is recommended. If you wish to use a lubricating oil on the deprimer, do so sparingly because the oil will hold dirt and debris in the action.
Harvey Deprimer is to be used only with discharged primers. If you have unfired primers that need to be removed, we recommend discharging the primers first with the proper firearm. If the primer cannot be discharged, we recommend disposing of the casing in the appropriate manner. A cartridge/primer only cost a few pennies and for the price of a trip to Urgent Care, you could buy cases of ammo. Safety glasses should also be worn for eye protection.