RCBS Lube-A-Matic Bullet Sizing Die Features The RCBS Lube-A-Matic Bullet Sizing Die is built with a hardened interior that promises excellent alignment for cylindrical bullet shapes as they pass through the sizing process. This precision construction is especially valuable when working with harder cast bullet lubricants that might otherwise cause inconsistent sizing in a less robust die. Sized to a .284 inch diameter this particular die covers a popular bore diameter used across a range of rifle cartridges favored by cast bullet shooters. The die also crimps the gas check on gas-check-style bullets combining two reloading steps into a single operation for efficiency on the bench. This die is designed to work with the Lube-A-Matic two-bullet sizer and lubricator as well as the Lyman 450 and 4500 lube sizers giving reloaders flexibility depending on which equipment they already own. RCBS offers this sizing die across a wide range of diameters letting cast bullet reloaders match their exact projectile specification rather than settling for a generic fit. Reloaders who cast their own bullets for rifle or handgun cartridges rely on tools like this to maintain consistent repeatable dimensions across every batch. For cast bullet shooters working in .284 caliber this RCBS sizing die delivers the precise repeatable sizing their reloading process depends on. RCBS Lube-A-Matic Bullet Sizing Die Specifications Manufacturer: RCBS Model: Lube-A-Matic Sizing Die Diameter: .284 Item Type: Sizing Die Caliber: .284 Caliber Available At: GrabAGun