Redding (what I have) and others make inserts for their measures with small metering chambers, for pistol loading. The ones with the micrometer adjustments are big time savers, if you change your loads around a lot. Just keep a record of the micrometer setting for each load, and if you ever want to duplicate it, just dial it in. Weigh a couple of throws, to verify, and you are good-to-go.