Features four precision molded nylon drums:
All drums are infinitely adjustable within range. No tools are required for adjustment. A graduated adjsutment key iincluded with each drum. Each turn of the adjusting screw is .1cc or about 1 grain of powder. Each key is marked with .01cc graduations allowing easy 1/10 grain powder adjustments.
Quickly set your charge, and mark it and the powder type on the flat of the drum set for easy reference for future reloading.