MEC Super Sizer Die Set Converter To 10 Gauge

The MEC Super Sizer Die Set Converter To 10 Gauge is a precision reloading accessory manufactured by Mayville Engineering Co. that transforms your existing Super Sizer shotshell press into a dedicated 10 gauge loading system. This die set converter enables shooters to expand their reloading capabilities without purchasing an entirely new press, making it an economical solution for those working with multiple gauge specifications in their ammunition preparation workflow.

The converter is engineered to integrate seamlessly with the Super Sizer platform, which is purpose-built for high-volume shotshell reloading. By swapping out the die set, users can reconfigure their existing press to handle 10 gauge loads with the same precision and consistency the Super Sizer is known for. The compact dimensions (2.2 x 2.2 x 6.4 inches) and modest weight of 0.46 lbs make this a straightforward addition to any reloading bench. Mayville Engineering Co. offers this converter in multiple gauge options—10, 12, 16, 20, 28 gauge, and .410 bore—allowing dedicated reloaders to build a modular system tailored to their specific ammunition needs.

This die set converter is designed for serious shotshell reloaders who need flexibility across multiple gauges. Whether working with specialty loads for hunting, sport shooting, or competitive shooting scenarios, the ability to reconfigure a press for different gauges eliminates the need for redundant equipment and saves bench space. Reloaders already invested in the Super Sizer platform will find this converter an essential tool for expanding their ammunition reloading capacity without significant additional expense.

The Super Sizer line represents a well-established approach to high-volume shotshell production. Choosing the correct gauge-specific die set is critical—this 10 gauge converter (MPN 816710) is engineered specifically for that gauge and will not function for other gauges. Verify compatibility with your existing Super Sizer press before ordering, and refer to your press documentation for proper die set installation procedures.