The MEC Super Sizer in 12 gauge (brand part no. 811912) resizes fired shotshells back to their original dimension using MEC’s Power-Ring collet system, a design favored by novice and seasoned shotshell reloaders alike. Eight steel fingers encircle the case base and apply even pressure until it’s reshaped back to spec, and the durable steel frame accepts shells of any length in 12 gauge. It’s also a straightforward way to update an older, more conventional shotshell loader with modern resizing capability. MEC’s Super Sizer part numbers run gauge-specific, so this particular unit is built for 12 gauge specifically, not the full 10/12/16/20/28 gauge and .410 bore range the Super Sizer design covers as a family.

Key Specifications

• 12 Gauge is the specific shotshell gauge this Super Sizer unit is built to resize
• Power-Ring Collet System is MEC’s resizing mechanism at the core of this tool
• Eight Steel Fingers encircle the shell base and apply even pressure to reshape it back to original dimension
• Accepts Any Shell Length in the listed gauge, so it isn’t limited to one hull length
• Durable Steel Frame and included hardware are built for repeated resizing sessions

Frequently Asked Questions

Does this Super Sizer work on any gauge? No, MEC’s Super Sizer part numbers are gauge-specific; this particular part number is built for 12 gauge.

Can this update an older, conventional shotshell loader? Yes, MEC designed the Super Sizer as a straightforward way to add modern base-resizing capability to a more conventional reloader.

Buy the MEC Super Sizer, 12 Gauge

For 12-gauge shotshell reloaders whose fired hulls are wearing out of spec at the base, this Super Sizer brings them back to original dimension shell after shell. Order from MEC‘s reloading equipment lineup. Ships fast from a Lubbock, TX gun shop.