MEC 600 Jr. Mark 5 Single Stage Reloader Press 20 ga

The MEC 600 Jr. Mark 5 Single Stage Reloader Press for 20 gauge is a precision-engineered single-stage shotshell reloading press manufactured by Mayville Engineering Co. This 20 ga reloader delivers consistent production speeds of four to six boxes per hour, making it ideal for shooters who want efficient, hands-on control over each round they load for skeet, trap, hunting, or sport shooting applications.

Single-stage reloading presses like the MEC 600 Jr. Mark 5 require the operator to complete each station (priming, powder charging, shot/wad placement, and crimping) one shell at a time before advancing to the next round. This design gives reloaders complete visibility and control over every step of the loading sequence, reducing the risk of inconsistent loads. The MEC 600 Jr. Mark 5 is optimized for 3-inch shotshell dimensions and accommodates various loading specifications within the 20 gauge platform. An optional upgrade to the primer feeding system is available, allowing continuous priming without manual handling of individual primers—a meaningful time-saver for high-volume reloaders.

This reloader is purpose-built for 20 gauge ammunition handloaders who prioritize reliability and repeatability. Whether you're preparing loads for a competitive shooting season, developing custom hunting ammunition, or maintaining a personal reloading operation, a single-stage press gives you the precision and oversight that progressive presses do not. The bench-mounted design and substantial 13.88 lb weight provide stable leverage and minimal vibration during operation, critical factors for consistent primer seating and shot charge distribution.

Mayville Engineering Co. has established a reputation for manufacturing shotshell reloading equipment that serves both recreational and competitive shooters. Single-stage reloaders remain the standard choice for precision-focused reloaders who reload small batches and value process control over production speed. The MEC 600 Jr. Mark 5 combines proven mechanical simplicity with the quality standards expected from a heritage ammunition equipment manufacturer.