RCBS Full-Length Die Sets are crafted from proprietary die steel, machined to precise tolerances and undergo a detailed finishing process, ensuring that hand-loaders receive the best dies available. This comprehensive set includes both a Full-Length Sizing Die and a Bullet Seating Die, designed for reloading bottleneck cases. The Full-Length Sizer Die, equipped with an Expander-Decapping Unit, sizes the case to SAAMI minimum cartridge dimensions, de-primes and expands the neck to fit the bullet properly. Built-in vents prevent damage from trapped air or excess lubricant. Additionally, the die maintains tight headspace tolerances, avoiding changes to the case body length during sizing. The Bullet Seating Die features a Seater Plug and a roll crimper, securely seating and crimping the bullet in one operation, resulting in consistent and reliable ammunition every time.