The Hornady Lock-N-Load Handgun Metering Assembly is designed for use with the Hornady Lock-N-Load Powder Measure (sold separately) and is designed to throw charges of pistol powders between 0.5 to 17 grains.
WARNING: This product can expose you to Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to - www.P65Warnings.ca.gov.
I load enough different calibers of ammo, these are a huge time saver. I have 1 set up for every caliber, so i set up the dies and the meter assembly and am loading rounds within a few mimutes.