RCBS Full Length Die Set .257 Roberts 12501

The RCBS Full Length Die Set .257 Roberts (12501) is designed for reloading bottleneck cases, providing you with the essential tools for precision ammunition crafting. This two-die set includes a full-length sizer die featuring an expander-decapping unit and a seater die equipped with a bullet seater plug. The full-length sizer die ensures that your cases meet SAAMI minimum cartridge dimensions by resizing the outside of the case, de-priming, and expanding the neck for bullet seating. Built-in vents prevent damage from trapped air and excessive lubricant, while maintaining headspace within minimum tolerances to avoid altering case body length during the sizing process. The seater die also features a roll crimper to secure the bullet during seating, making this set a reliable choice for reloading .257 Roberts ammunition.