This die is used to charge small capacity rifle cases ranging from 22 caliber to 30 caliber with a minimum case length of 1.403" to a maximum case length of 2.015" (Ex: 22 Hornet to the 308 Winchester) using the Auto-Disk Powder Measure. It works the same as the pistol powder through expanding dies except it doesn't expand the case mouth. Rifle case expansion is normally done in the sizing die. Steel die comes packaged in a plastic storage case. Shellholder sold separately.