The Hornady Custom Grade Seater Die is a great die for the avid reloader. The Seater Die will improve your bullet seating and accuracy with its floating bullet alignment sleeve and stem. The floating sleeve is designed to align the bullet and case prior to seating preventing any deformations on the base of the bullet. The Seater Die features a roll crimp. 280 REM (.284) Elliptical expander Seater adjustment screw Locking retainer ring In-Line bullet seating system Built In Crimper Easy Access Die Box