Deluxe Die Set Features The quality and accuracy of your reloaded ammunition depends largely on the quality of the equipment you use to assemble it. Deluxe die sets for bottleneck cases contain three dies. They are a special packaging of Redding s full length die sets with the addition of a neck (NK) sizing die. Deluxe Die Set Specifications Brand: Redding Reloading Caliber: .224 valkyrie Reloading Die Type: Rifle Set Full Length Die Neck Sizing Die Seating Die