The RCBS Neck Expander Plug .309 cal is a replacement plug intended for use with the RCBS Neck Expander Die in reloading operations. It is designed to assist with neck expansion and case mouth flaring, streamlining a common step in preparing cases for seating cast bullets. The plug is part of RCBS’s line of reloading components used in precision case preparation.
Key Specifications
- Made by RCBS.
- Designed for .309 cal.
- Compatible with dimensions including .224, .227, .264, .308, .309, .310, .321, and .323.
- Intended as a replacement plug for the RCBS Neck Expander Die.
- Enables neck expansion and case mouth flaring in one step.
- Classified under Other Reloading Equipment.
This RCBS plug provides a straightforward solution for shooters and reloaders who prioritize consistent neck preparation. Its role in consolidating expansion and flaring into a single operation helps streamline reloading workflows and supports accurate seating of cast bullets.
This description was generated with AI and may contain errors. Verify specifications and legal restrictions with the manufacturer before purchase. Provided “as-is” without warranties or guarantees.




