Hornady Powder Cop: * The Hornady Powder Cop can install on your progressive press after the powder drop station to automatically check dropped charges * Checking powder charges on your progressive press can be difficult, and is sometimes ignored, even though it"s a smart practice * Hornady uses a similar device on our own ammo manufacturing presses * It won"t replace careful attention, but helps monitor the reloading process * Works with all powder types and cartridges