The Uniflow Powder Measure throws consistently accurate charges reload after reload. Powder pours uniformly from the measuring cylinder into case, thereby eliminating the hazards of overloads caused by clogging when charges are dumped. The unit changes easily from charge to charge without emptying powder hopper. Numbered measuring screw is used for reference to find a given charge at a later date. The measuring cylinder has precision ground surfaces and slides into the honed main casting for a precision fit. Standard 7/8"-14 thread. The Uniflow Powder Measure includes stand plate, drilled for easy mounting, and is supplied with two drop tubes for .22 caliber and up. The Uniflow Powder Measure is fully capable of accurately measuring all three major powder types - ball, cylindrical and flake. It will even cut the cylindrical powders so that a precise charge can be obtained. NOTE: NOT for use with black powder. This item is the large model.