This 2-Die Set is designed for reloading bottleneck cases, offering precision and versatility in the reloading process. The set includes a Full-Length Sizer Die with an Expander-Decapping Unit and a Seater Die with a Bullet Seater Plug. The Full-Length Sizer Die ensures that the case is brought to SAAMI minimum cartridge dimensions by sizing the outside of the case, de-priming and expanding the neck to properly accept the bullet. The die is also equipped with vents to release trapped air and excess lubricant, preventing potential damage to the case. It is engineered to maintain minimal headspace tolerances, ensuring that the case body length remains unchanged during full-length sizing. The included Seater Die comes with a built-in roll crimper, securely holding the bullet as it is seated, providing a tight and reliable seal. This set ensures precise and efficient reloading for bottleneck cases, delivering optimal performance in every round.