I have an RCBS adjustable powder measure ( Uniflow ??? ) & just picked up a used Little Dandy from my machinist buddy... I had some issues trying to run the Uniflow small enough for little low powered handgun cartridges both antique, & little modern ones like the 25 ACP that I built a custom revolver for... along with a couple rotors, I got several blanks he machined, that can have chambers drilled / machined into them... then I turned around & bought a #0, #1, #2, & #3 rotor... I expect it'll work well for the cartridges with very small charges of powder... I won't use it to replace my adjustable measure for bigger more common cartridges though...
BTW... I've not used mine yet, as I need to get a base or adaptor built... I have stainless tops on my loading benches, & am trying to have all my presses, & accessories mount into one of two bolt patterns, that fit threaded plates under the bench
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