Lyman MSR Precision 458 Socom Sizing, Neck Expanding, Bullet Seating, Taper Crimp 4 Die Set

Overview

Lyman MSR Die Sets are engineered specifically for modern sporting rifle ammunition. Each 4-die set includes a Small Base Sizing Die to size cases to a slightly smaller diameter for smooth semi-auto chambering, a separate Seating Die, a Taper Crimp Die to provide a tight bullet grip and reliable feeding through semi-auto actions, and an "M" Neck Expanding Die featuring a two-step expander plug design for smooth bullet seating without overworking the brass. Finished in a black oxide coating to match modern black rifles, the set also includes an Ammo Checker "Go" gauge machined to minimum chamber specs and is packed in a sturdy, foam-lined storage case with a clear cover.

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