The RCBS Small Base Sizer Die Set for .308 Winchester is designed for reloaders preparing ammunition for semi-automatic, pump-action, and lever-action rifles. This die sizes brass to minimum specifications, ensuring cartridges chamber reliably while setting the shoulder back slightly more than standard full-length dies. Equipped with an expander-decapping unit, it efficiently removes spent primers and preps brass cases for reloading. Ideal for non-bolt-action firearms, this die ensures consistent performance. A storage box is included, but shellholders are sold separately.