MEC Super Sizer Die Set Converter To 20 Gauge

If you're already set up with a MEC Super Sizer shotshell reloading press, the MEC Super Sizer Die Set Converter To 20 Gauge lets you expand your reloading capabilities without buying a whole new machine. This die set converter swaps into your existing Super Sizer press, converting it to load 20 gauge shells. Whether you're a duck hunter who also shoots upland birds, or you simply want to keep costs down by reloading for multiple gauges, a die set converter is a practical way to get there.

MEC (Mayville Engineering) has been building shotshell reloading equipment for decades, and their Super Sizer line is known for durability and straightforward operation. Swapping die sets is faster and cheaper than investing in a second press, so if you've already dialed in your Super Sizer workflow, this converter keeps you in that same platform while opening up 20 gauge loading.

The conversion process itself is straightforward—the new die set replaces your current one in the press. Since you're already familiar with your Super Sizer's operation, you'll be loading 20 gauge shells without a learning curve. This is ideal for reloaders who shoot multiple gauges and want the economics and consistency of home reloading across their shotgun collection.

Key Features

• Converts your existing MEC Super Sizer press to load 20 gauge ammunition
• Lets you reload multiple gauges without purchasing additional equipment
• Maintains the proven reliability of the Super Sizer platform
• Simple, tool-free die set swap

Frequently Asked Questions

Will this die set work with my MEC Super Sizer press?

Yes—the MEC Super Sizer Die Set Converter To 20 Gauge is designed to replace the die set in your existing Super Sizer press, converting it to 20 gauge loading.

Do I need any special tools to swap the die set?

The facts provided don't specify tools required for the swap. Contact us for detailed installation instructions.

Can I keep my original die set and swap back and forth?

Yes—you can store your original die set and swap between gauges as needed by changing out the die set in your press.

What other gauges are available in this die set converter?

MEC offers Super Sizer die set converters in 10, 12, 16, 20, 28 gauge and .410 bore, so you can outfit your press for whatever shotgun you're loading for.