The Hornady priming system primes after the end of the downstroke. Pushing the lever forward engages the primer punch, seating the primer. This is another unique Hornady feature, because you can cycle the press without it automatically engaging the priming system.

If any powder grains get inside that primer punch, it stays stuck open or permanently engaged. On the upstroke, the primer transfer bar will not be able to move, so the press will bind. Don't force it, or the transfer bar will break.

In that scenario, disassemble and clean.

Hornady genius at work here. The Hornady priming system on this press is the simplest, safest and most sophisticated of all the presses I've worked with.

This is the quickest primer change system. Period.

Using a hex driver, remove the bolt securing the primer tube base.

Theres a spring connecting the primer transfer bar to the press body.

Using a needlenose plier, unhook the spring.

Remove the bolt holding the primer tube base to the press.

The primer transfer bar has a small roller on it. This needs to be changed betwen large and small pistol primers.

Each Hornady press will ship with two primer transfer bars.

The priming assembly removed. See the primer punch in the frame - that also needs changing between large and small pistol primers.

To get to the primer punch, raise tha ram, and use a wrench to unscrew it, then replace. You receive two primer punches with the press, one small pistol, one large pistol.