Description
The RCBS Shell Holder 21 is a single-stage reloading shell holder machined from hardened steel and precision-sized to fit the .303 Savage case head. As part of RCBS’s renowned line of removable shell holders, the 21 captures 0.125″ of the case head to maintain proper SAAMI headspacing during resizing and decapping operations, ensuring consistent reloads round after round.
Each RCBS shell holder is numbered and cross-referenced to specific cartridge case dimensions, so the 21 is the correct choice for handloaders working with the classic .303 Savage. The shell holder drops into any standard RCBS single-stage press and provides the positive case retention needed for reliable sizing, with hardened steel construction that delivers long service life under repeated loading cycles.
