The MEC Sizemaster Shotshell Reloading Press (MEC part no. 812020) brings the same proven Power Ring resizing system to 20 gauge that’s made the Sizemaster a staple across MEC’s 12, 20, and .410 gauge press lineup. The Power Ring collet resizer returns every hull base to factory specification regardless of whether you’re running brass or steel heads, high base or low base, and the press adjusts to load shells up to 3 inches. Built on a cast iron frame with a multi-size thread pattern, it accepts MEC’s standard bushings and charge bars without modification. For 20 gauge shooters loading their own shells, it’s a dependable, no-surprises press built on a platform with a long track record.

Key Specifications

• Chambered for 20 gauge.
• Built as a single-stage shotshell reloading press.
• Uses a Power Ring collet resizer that returns every base to factory specification.
• Resizing station handles brass or steel heads, high or low base.
• Adjustable to load up to 3-inch shells.
• Uses a multi-size thread pattern compatible with standard MEC accessories.
• Built with a cast iron frame.
• Measures 23.25 inches overall.
• Part of MEC’s proven Sizemaster platform, shared across 12, 20, and .410 gauge configurations.

Frequently Asked Questions

Does this handle steel-head hulls? Yes, the Power Ring resizer handles brass or steel heads, high or low base.

Can it load 3-inch shells? Yes.

What’s the press made of? Cast iron.

Buy the MEC Sizemaster Shotshell Reloading Press, 20 Gauge, Cast Iron

20 gauge shooters reloading their own shells get the same proven Sizemaster resizing that’s kept MEC’s platform trusted for decades. Order from our MEC lineup in our reloading presses and kits selection, and our Lubbock, Texas team can help you round out your bushings and charge bars.