This two-die Small Base set from RCBS is built for handloaders working with bottleneck rifle cases that chamber tightly in semi-automatic, pump, or lever-action rifles. The set pairs a Small Base Sizer featuring an expander-decapping unit with a Regular Seater Die that includes a seater plug and roll crimper. The sizer reduces shoulder and body dimensions below SAAMI minimums when necessary and also de-primes fired cases. The seater die secures bullets with an integrated roll crimp and can be adjusted to seat without crimping.
Key Specifications
- The set contains 2 dies.
- This is a Small Base type die set.
- The sizer includes an Expander-Decapping Unit.
- The seater is a Regular Seater Die with Seater Plug.
- The seater die features a built-in roll crimper to secure the bullet during seating.
- The sizer is intended to resize cases below SAAMI minimums, reducing shoulder and body by a few thousandths.
- To seat bullets without crimping, the die can be adjusted by unscrewing until the crimp ring no longer engages.
- Carbide inserts: No.
- Package dimensions are 1.75 x 4.55 x 6.00.
- Weight (packaged) is listed as 1.1688.
This RCBS Group A Small Base Die Set provides the essential tools for reloaders who need reliable case sizing and consistent seating in challenging chambers. Its combination of a small-base sizer with expander-decapping and a seater die with an adjustable roll crimper makes it a practical choice for dedicated handloaders seeking repeatable, toolroom-style results when working with tight-chambering rifle actions.









