By separating the seating and crimping operation, you will benefit by a greatly simplified adjustment. More importantly, the Carbide Factory Crimp Die post sizes your case assuring you that any round that passes through the die will chamber properly in your gun. Includes: Sizer/Decapping Die, Powder Through Expanding Die, Bullet Seat and Feed Die, Factory Crimp Die, Shellholder, Powder Dipper and Load Data. (Will also work for reloading 357 Magnum with minor adjustments.)