The Bushing Bump Neck Sizing Die brings you an advanced precision level by allowing you to precisely control the amount of bullet tension in your reloaded cartridges. A one-step neck sizing reduction/shoulder bump operation keeps your case necks straighter. This die improves accuracy and prolongs case life because the body of your case maintains its fire-formed “glove” fit to your rifle’s chamber. At the same time it “bumps” the shoulder of the case to maintain excellent case neck concentricity. Sizes the case neck and shoulder to set headspace and de primes Prevents overworking of case necks while controlling the amount of neck tension for your bullet seating operation Over 90 available bushings allow case necks to be sized to your exact requirements Versatility allows you to custom size cases to your specifications