Description

The .257 Weatherby Magnum is known for its extreme velocity and unique “double-radius” shoulder design. The Redding Series B die set is specifically engineered to maintain these precise dimensions, ensuring reliable chambering and long brass life.

The Full-Length Sizing Die features a decapping rod assembly with a “long-life” expander ball. This expander is highly polished to reduce friction and minimize “neck pull,” which is a common cause of concentricity issues in long magnum cases. The Seating Die includes a built-in crimping ring, allowing you to secure bullets against the heavy recoil often associated with magnum rifles. Every die is CNC-machined and heat-treated to ensure it remains within $0.001″$ tolerances over a lifetime of use.

Key Features:

Series B Classification: Designed for specialized or lower-volume cartridges that require higher manufacturing standards.

Double-Radius Shoulder Support: Perfectly mirrors the Weatherby-specific chamber geometry.

Knurled Body: Allows for easy finger-tightening and precise adjustment in the press.

Standard Compatibility: Fits all standard 7/8″-14 threaded reloading presses.