RCBS Full-Length 2-Die Set Group A .257 Roberts - 12501

This two-die reloading set for .257 Roberts bottleneck cases includes a Full-Length Sizer Die with Expander-Decapping Unit and a Seater Die with Bullet Seater Plug. The sizer die brings cases to SAAMI minimum dimensions while sizing the case exterior, de-priming, and expanding the neck to accept bullets, with vents to prevent case damage from trapped air or excess lubricant.