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RCBS 16301: This set of two dies is specifically designed for the purpose of reloading bottleneck cases. The set is comprised of a Full-Length Sizer Die with an incorporated Expander-Decapping Unit, as well as a Seater Die that is equipped with a Bullet Seater Plug. The Full-Length Sizer Die is responsible for adjusting the case to meet Saami's minimum cartridge dimensions. This is achieved by sizing the case's exterior, de-priming it, and expanding the neck to accommodate the bullet. The die is also designed with vents that serve to prevent any potential case damage that could be caused by trapped air or an excess of lubricant. The tool exerts precise control over headspace to maintain minimal tolerances and prevent any alteration to the case body length during the full-length sizing process. Additionally, the Seater Die that comes with the set features a built-in roll crimper, which ensures that the bullet is securely fixed at the same moment it is seated.