Hold deprimer in one hand with the lever and depriming rod open
Place case with spent primer on depriming rod
Place depriming pin into the flash hole of the case.
Push the depriming rod back into the handle
If the depriming pin is not in the flash hole, the case will not insert 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 case will fall free.