This two-die set from RCBS is designed for reloading bottleneck rifle cartridges in .300 Norma Mag. It includes a Full-Length Sizer Die with an Expander-Decapping Unit and a Seater Die with a bullet seater plug. The sizing die brings the case to SAAMI minimum cartridge dimensions and is vented to prevent case damage from trapped air or excessive lubricant. The seater die features a built-in roll crimper to secure the bullet as it is seated.
Key Specifications
- The set includes a Full-Length Sizing Die and Bullet Seating Die.
- The sizing die incorporates an Expander-Decapping Unit.
- The sizing die brings cases to SAAMI minimum cartridge dimensions.
- The sizing die has vents to prevent case damage from trapped air and excess lubricant.
- Headspace is held to minimum tolerances to avoid changing case body length during full-length sizing.
- The seater die includes a built-in roll crimper to secure the bullet while seating.
- Threading is 7/8″-14.
- Die material is Proprietary Die Steel.
- The set ships in a green die box.
- The product is Made in USA.
Engineered for reliable, repeatable full-length sizing and seating, this RCBS two-die set is a practical choice for handloaders working with .300 Norma Mag bottleneck rifle cartridges. Its vented sizing die and controlled headspace help preserve case integrity during sizing, while the integrated roll crimper streamlines bullet seating. Built to address the needs of precision-minded reloaders, the set balances durability and functionality for consistent handloads.
