The RCBS Taper Crimp Seater Die is designed to seat bullets and crimp them securely in place using a built-in taper crimp. This is a single die that performs two crucial functions in the reloading process, making it a time-saving and convenient tool for any reloader. The RCBS Taper Crimp Seater Die seats the bullet and has a built-in taper crimper to secure the bullet at the same time. Seat and crimp bullets in place with a single tool Taper Crimp Seater Die seats bullets into brass casings to the desired depth Helps prevent bullet setback during feeding and recoil Component and Caliber Reference Table