MEC 600JR Mark 5. Reloader comes with 1-1/8 oz Charge Bar & #29, #30, #32 Powder Bushings. MEC has redesigned the 600JR., their most popular model and the world's top selling shotshell reloader, to include popular features found on their more expensive models. Novice and seasoned gunners will appreciate these new features along with the time-tested excellence this single stage reloader has provided over the years with quick, simple operation and a minimun of effort. Reloader comes with 1-1/8 oz Charge Bar & #29, #30, #32 Powder Bushings.