Straight wall pistol and rifle cases require a three die set. The first die resizes and decaps the case. The second die expands (bells) the case mouth to accept a new bullet, and the third die seats (and, if desired, crimps) the bullet. These dies must be correctly adjusted to produce a proper reload.
Hornady dies are hand-inspected and the steel is heat-treated for durability and strength. The hand-polished mirror finish creates dies so smooth that they will never scratch a case. Rifle dies feature an elliptical expander that reduces friction and case-neck stretching. A sliding, in-line seating system vertically aligns each bullet with the case neck for perfect centering.