Lee Precision X-Press Shellholder #4 APP Press Steel

The Lee Precision X-Press Shellholder #4 is a factory steel shell holder machined for the Lee APP (Automatic Processing Press) and the Deluxe APP reloading press. It grips the cartridge case base during sizing, decapping, and priming so the case is held at the correct headspace datum for concentric, repeatable resizing and consistent primer seating.

Shellholder #4 is the designated fitment for .223 Remington, 5.56x45mm NATO, 300 AAC Blackout (7.62x35mm), 17 Remington, 204 Ruger, 221 Fireball, 222 Remington, 7mm TCU, and similar small-bore bottleneck cases. It is a direct OEM part for anyone running an APP or Deluxe APP press and loading any of the listed or comparable cartridges.

Lee X-Press shell holders are intended for the APP press platform only; they are not interchangeable with the standard Lee breech-lock shell holders used on other Lee presses. Confirm #4 is the correct holder for your specific cartridge via the Lee shell holder chart before reloading.