The Hornady Lock-N-Load system features quick tool change technology that allows you to switch rilfe and pistol dies, powder dies, check dies, bullet seaters or crimp dies with out having to change the whole die head. This unique technology is featured on all Hornady presses. In addition, Hornady conversion bushing can convert other brands to the Lock-N-Load system. 

How Lock-N-Load works:

Insert the Lock-N-Load die bushing into the press bushing and lock it into place with a twist. The six locking lugs on the die and press bushings will hold it securely in position. 

Insert your standard die with 7/8"-14 threads into the Lock-N-Load bushing. 

Adjust the die to the proper position and lock your setting into place with Hornady's unique Sure-Loc lock ring.

To change calibers, simply twist the die counterclockwise, remove die and insert your next preset Lock-N-Load die and bushing. Because they remain locked in their Lock-N-Load bushings, your dies will remain exactly as you set them.

The positive locking action of the Lock-N-Load bushing holds the dies in a perfect alignment. Once you try Lock-N-Load for Hornady, you'll never want to go back to your old system.