Hornady's all metal Black Powder Measure features a non sparking aluminum hopper and an adjustable brass metering unit. It's designed specifically to meet the safety needs of handloaders working with black powder. The meter is calibrated up to 100 grains. Extremely tight tolerances eleminates binding from powder between the frame and drum. Will also fit on the Hornady Lock-N-Load Auto Progressive Press for some incredable fast Black Powder Cartridge Loading.