RCBS Full-Length Die Sets are crafted from our proprietary die steel, ensuring exceptional precision and durability. Each die undergoes a meticulous finishing process to meet the highest standards, providing hand-loaders with some of the best dies available. The Full-Length set includes a Full-Length Sizing Die and a Bullet Seating Die, specifically designed for bottleneck cases. The Sizer Die features an Expander-Decapping Unit, sizing the case to SAAMI minimum cartridge dimensions, while de-priming and expanding the neck for bullet seating. Vents are included in the die to prevent damage from trapped air and excess lubricant. Headspace is maintained to precise tolerances, avoiding alterations in the case body length during sizing. The Seater Die incorporates a built-in roll crimper, securely seating and crimping the bullet in one step.