Check the listing for details. Redding Competition BR-30 Powder Measure Operating Handle. Condition: New. Listed at 23.87 USD. The Redding Competition BR-30 Powder Measure is truly a competition powder measure with some very special features. The drum and micrometer design limits the overall charging range from a low of 10 grains to a maximum of approximately 50 grains. It is designed specifically for competition shooters and reloaders whose loading requirements are between this range. The powder measure features a redesigned drum and micrometer. The metering plunger has a new shape to alleviate irregular powder settling and to enhance uniformity. This is the factory replacement operating handle.