Used for reloading short cartridges when using the RCBS Competition Seating die.
Fits:7mm Remington Short Action Ultra Magnum, 7mm Remington Ultra Magnum, 300 Remington Ultra Magnum, 455 Webley
- Extended shellholder allows working with shorter cartridge lengths and in custom applications
- Extra-Long Extended shellholder is used in some case-forming operations and in custom applications
- Competition shellholders are black oxide coated
- Extended Shellholders do not have a hole drilled out to decap brass during the sizing operation