Additionally, the die features a micrometer adjustment that allows for precise control over the amount of neck length to be sized. This level of control is particularly beneficial for competition shooters who require exact specifications for their cartridge cases. The device incorporates an internal sliding sleeve that supports and aligns the cartridge case with the neck sizing bushing prior to the commencement of the sizing process Interchangeable bushings enable precise selection of the appropriate neck sizing for specific requirements The micrometer adjustable bushing position and variable-length decapping rod enable precise resizing of any specified neck length segment