12 Gauge 600 Jr. Mark 5 Auto Primer Feed -MEC has redesigned the 600 Jr., our most popular model and the world's top selling shotshell reloader, to include popular features found on our 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 minimum of effort. The MEC 600 Jr. Mark 5 can load eight to ten boxes per hour, and can be upgraded at a later date with the 285 CA primer feed, which eliminates the need to handle each primer individually. Best of all, the price won't shoot anyone's budget. The press is adjustable for 3" shells, and is available in 10, 12 16, 20, 28 gauge and .410 bore. Die sets are available in all gauges.