The MEC 600 Jr. Mark 5 is a single-stage shotshell press built for reloaders who want straightforward, reliable performance without unnecessary complexity. This 16-gauge, 2-3/4" press is engineered for shooters who load their own shells in modest volume—expect to produce four to six boxes per hour at a comfortable pace. If you're new to shotshell reloading or you're a hunter who just wants to keep a steady supply of ammo on hand without investing in a progressive setup, this press delivers solid value and consistent results.

MEC-Gar USA has been making reloading equipment for decades, and the 600 Jr. Mark 5 reflects that heritage: straightforward mechanical design, few parts to wear out, and a proven platform. The single-stage operation means you'll work through each step methodically—decapping, resizing, repriming, powder charging, and seating—but that deliberate pace also gives you control and visibility into every round. It's not the fastest way to reload, but it's honest and forgiving for someone building a library of shotgun loads tailored to their shotgun and shooting style.

The press accepts upgrade options if you decide later to speed up priming, removing the tedium of hand-seating each primer. That modularity is typical of MEC equipment—you buy what you need now and add capability without replacing the whole rig. For hunters, sport shooters, and budget-conscious reloaders who shoot 16-gauge regularly, the 600 Jr. Mark 5 is a no-frills workhorse.

Key Features

• Single-stage design for controlled, methodical reloading
• Rated for 16-gauge, 2-3/4" shells
• Produces 4–6 boxes per hour
• Simple mechanical operation with minimal learning curve
• Upgradeable for automated priming
• Proven MEC-Gar engineering and reliability

Specifications

Frequently Asked Questions

Can I upgrade this press later?

Yes. The MEC 600 Jr. Mark 5 can be upgraded to automate priming, which eliminates the need to hand-seat each primer and speeds up your workflow.

What calibers or gauges does this press handle?

This particular model is designed for 16 gauge, 2-3/4" shells. MEC makes separate presses for other gauges (.10, .12, .20, .28, and .410 bore), so verify you have the right press for your needs.

How fast can I reload with this press?

The 600 Jr. Mark 5 produces between four and six boxes of shotshells per hour, depending on your pace and familiarity with the process.

Is this a good press for a beginner?

Yes. The single-stage design is simple and straightforward, with no complex mechanics to learn. You'll work through each reloading step deliberately, which helps you understand the process and maintain consistent quality control.