RCBS Little Dandy Powder Rotor #00

I've used this powder measure with the appropriate rotors for over 30 years. They are very useful when working up loads before you decide on a charge to set on a progressive setup. Test each rotor with your scale and the powder you are using to determine that it is throwing the charge you want. Don't just use the chart that is available on various websites. Also when you receive a new rotor, clean it with a Cotton Swab dipped in lighter fuel or isopropyl alcohol to remove any residual oil that can make the powder stick.