RCBS Legacy 3-Die Roll Crimp Set Features The RCBS Legacy 3-Die Roll Crimp Set is built for the .50-90 2 1/2 Sharps cartridge a classic black powder round still favored by enthusiasts shooting original and reproduction rifles alike. This set is designed specifically for loading straight-wall cartridges and includes three dies that each handle a distinct step of the reloading process. The steel sizer die sizes the case to proper dimensions and deprimes it though RCBS notes that cases must be lubricated before running them through this die. Following sizing the expander die expands the case to the correct diameter to accept the bullet while also imparting the case mouth flare or bell needed for smooth bullet feeding during the seating step. The seater die completes the process by seating the bullet to the correct depth and applying a roll crimp in the same operation securing the bullet in place for reliable cycling and chambering. RCBS developed the Legacy series specifically to support these legendary metallic black powder cartridges recognizing that enthusiasts continue to shoot original and reproduction rifles chambered for rounds like the .50-90 Sharps despite newer calibers being introduced every year. This dedication to supporting historic cartridges gives black powder cartridge shooters a dependable source for quality reloading equipment. For reloaders working with the .50-90 2 1/2 Sharps the RCBS Legacy 3-Die Roll Crimp Set is a purpose built solution available for sale at GrabAGun. RCBS Legacy 3-Die Roll Crimp Set Specifications Manufacturer: RCBS Model: Legacy 3-Die Roll Crimp Set Caliber: .50-90 2 1/2 Sharps Die Type: Rifle Set Available At: GrabAGun