Availability: In Stock
The MEC Sizemaster 12 gauge single stage shotshell press is built for reloaders who shoot volume. If you're working through cases by the box—whether you're running trap loads, field hunting rounds, or testing loads at the range—this press handles both 2-3/4" and 3" shells without swapping hardware. It's the kind of tool that rewards consistency: each stroke performs the same operation, letting you focus on quality and repeatability rather than fussing with complicated linkages.
What makes the Sizemaster stand out is its straightforward, proven design. The adjustable resizing chamber ensures your cases are prepped correctly, while the cam-operated crimp mechanism handles the finish work reliably. The flip-top measure keeps your reloading bench organized and speeds up powder and shot charging. A long stroke design works smoothly whether you're loading light trap loads or heavier field ammunition, and it functions equally well for both left and right-handed operators—just set it up for your stance and go.
This is serious reloading equipment for shotgunners who understand that handloading is part of the discipline. Whether you're feeding a competitive trap gun, keeping a hunting shotgun fed through the season, or experimenting with load development, the Sizemaster's single-stage design gives you control and consistency without the complexity or footprint of larger progressive systems.
| Brand | Mec-Gar USA |
| Press Type | Single Stage |
| Gauge | 12 |
| Shell Lengths | 2-3/4" and 3" |
| Crimp Starter | Spindex2 (included) |
| Orientation | Ambidextrous (left and right-handed) |
Yes. The Sizemaster is designed to reload both 2-3/4" and 3" shells, making it versatile for different hunting and sport shooting applications without requiring separate tooling.
The Sizemaster comes with an adjustable resizing chamber, a Spindex2 crimp starter system, and a flip-top measure for powder and shot charging.
Yes. The MEC Sizemaster is designed to work for both left and right-handed operators, so you can set it up for your stance and dominant hand.
The press works with field loads, trap loads, and other ammunition types. The long stroke mechanism is designed to handle both light loads with low brass and heavier loads with high brass shells.
SKU: 115794633 • Width: 17.2in • Height: 9.3in • Depth: 22.7in • Weight: 19.5oz



Availability: In Stock
The MEC Sizemaster 12 gauge single stage shotshell press is built for reloaders who shoot volume. If you're working through cases by the box—whether you're running trap loads, field hunting rounds, or testing loads at the range—this press handles both 2-3/4" and 3" shells without swapping hardware. It's the kind of tool that rewards consistency: each stroke performs the same operation, letting you focus on quality and repeatability rather than fussing with complicated linkages.
What makes the Sizemaster stand out is its straightforward, proven design. The adjustable resizing chamber ensures your cases are prepped correctly, while the cam-operated crimp mechanism handles the finish work reliably. The flip-top measure keeps your reloading bench organized and speeds up powder and shot charging. A long stroke design works smoothly whether you're loading light trap loads or heavier field ammunition, and it functions equally well for both left and right-handed operators—just set it up for your stance and go.
This is serious reloading equipment for shotgunners who understand that handloading is part of the discipline. Whether you're feeding a competitive trap gun, keeping a hunting shotgun fed through the season, or experimenting with load development, the Sizemaster's single-stage design gives you control and consistency without the complexity or footprint of larger progressive systems.
| Brand | Mec-Gar USA |
| Press Type | Single Stage |
| Gauge | 12 |
| Shell Lengths | 2-3/4" and 3" |
| Crimp Starter | Spindex2 (included) |
| Orientation | Ambidextrous (left and right-handed) |
Yes. The Sizemaster is designed to reload both 2-3/4" and 3" shells, making it versatile for different hunting and sport shooting applications without requiring separate tooling.
The Sizemaster comes with an adjustable resizing chamber, a Spindex2 crimp starter system, and a flip-top measure for powder and shot charging.
Yes. The MEC Sizemaster is designed to work for both left and right-handed operators, so you can set it up for your stance and dominant hand.
The press works with field loads, trap loads, and other ammunition types. The long stroke mechanism is designed to handle both light loads with low brass and heavier loads with high brass shells.
SKU: 115794633 • Width: 17.2in • Height: 9.3in • Depth: 22.7in • Weight: 19.5oz