Lee Precision Factory Rifle Crimp Die Features The Lee Factory Rifle Crimp Die combines a carbide sizing ring with a crimping step so every .204 Ruger case is post sized at the same moment the crimp is applied. This dual action means the finished round will chamber freely just as it would straight out of the factory eliminating the guesswork that comes with separate crimping steps. The die accommodates a wide range of bullet styles including jacketed bullets without a cannelure by relying on sheer crimping force rather than needing a groove to bite into. A simple adjustment screw sets the desired amount of crimp giving the reloader full control over how firmly each round is finished. A firm consistent crimp directly improves accuracy by raising the start pressure needed to move the bullet which produces a more uniform pressure curve across a batch of ammunition. That uniformity translates into less shot to shot velocity variation a key factor for .204 Ruger shooters chasing tight groups at varmint ranges. Because the die handles post sizing and crimping in a single station it also saves time on the reloading bench compared to running a separate crimp die. For reloaders building precision or high volume .204 Ruger ammunition this die rounds out a press setup aimed at factory grade consistency. Lee Precision Factory Rifle Crimp Die Specifications Manufacturer: Lee Precision Model: Factory Rifle Crimp Die Caliber: .204 RUG Type: Crimp Die Dies In Set: 1 Available At: GrabAGun