RCBS Full Length Die Set Features The RCBS Full Length Die Set for .416 Barrett pairs a Full-Length Sizer Die with an Expander-Decapping Unit to resize fired cases and remove spent primers in a single step streamlining the reloading process for this large-format cartridge. The companion Seater Die with Bullet Seater Plug then seats bullets to precise depth giving reloaders consistent cartridge overall length round after round. Both dies use a 1 1/2 inch-12 thread a size reserved for the largest cartridges that standard reloading presses cannot accommodate. This heavy-duty thread spec reflects the scale of the .416 Barrett cartridge itself which demands tooling built beyond typical rifle die dimensions. These dies are designed for use with the AmmoMaster 2 press or the AmmoMaster Single Stage press when fitted with the .50 BMG Conversion Kit placing them firmly in the realm of specialized big-bore reloading equipment. That press compatibility matters because standard reloading presses are not built to handle the size and thread pattern this die set requires. Reloaders working with massive cartridges like .416 Barrett need equipment matched to the scale of the brass and this set is purpose built for that task. For shooters already invested in AmmoMaster big-bore reloading equipment this RCBS set completes the die requirements for .416 Barrett. RCBS Full Length Die Set Specifications Manufacturer: RCBS Model: Full Length Die Set Caliber: .416 Barrett Type: Rifle Die Set Thread: 1 1/2-12 Available At: GrabAGun