RCBS Single Stage Shell Holder #28 Size

The RCBS Single Stage Shell Holder #28 Size is a precision-machined reloading accessory designed to properly align cartridge cases with reloading dies in single-stage and turret presses. Built from hardened steel, this shell holder captures 0.125 inch of the case head to maintain proper SAAMI headspacing—a critical requirement for safe and consistent ammunition reloading. The #28 size is engineered to fit specific case head dimensions, ensuring reliable case positioning across multiple reloading cycles.

Headspacing accuracy directly impacts cartridge safety and performance. When a case is not properly aligned with the reloading die, inconsistent bullet seating depth and improper shoulder formation can result—compromising accuracy and creating pressure anomalies. The hardened steel construction of the RCBS Single Stage Shell Holder #28 resists wear from repeated press cycles, maintaining dimensional stability over hundreds of reloading operations. This durability ensures that cases remain consistently positioned, shot after shot, which translates to tighter velocity spreads and more predictable ballistic performance downrange.

Reloaders working with single-stage presses—the standard for precision rifle and handgun ammunition—depend on shell holders to eliminate variables during case processing. The #28 designation corresponds to a specific case head size; selecting the correct holder for your cartridge is essential for proper functioning. RCBS shell holders are engineered to industry standards and are compatible with standard press primer arms and case ejection mechanisms, making them a foundational component for any serious hand loader focused on accuracy and consistency.