Mec Loader 600jr Mkv .410 3'' 1116 -set Up For 3''. 10 11 12 powder bushings 11/16 oz. bar. Compound leverage. Single stage. Specifications for Mec Loader 600jr Mkv .410 3" 1116 -set Up For 3": Manufacturer: MEC Additional Features: Compound Leverage Single Stage Package Contents: Mec Loader 600jr Mkv .410 3" 1116 -set Up For 3" The Mec Loader 600jr Mkv .410 3" 1116 -set Up For 3" is a quality addition to the MEC lineup. For more great deals on Reloading Presses by MEC please browse our Mec Reloading Equipment page.