MEC Sizemaster Single Stage Shotshell Press 10 Gauge 3-1/2"

Product #: 434879 MEC #: 812010 UPC #: 098489011631

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Product Information

Mec is known for making high-quality shotshell presses that work great for all levels of shotshell reloaders from beginners just learning this skill to advanced loaders who have been reloading for decades. The MEC Sizemaster Single Stage Shotshell Press offers simplicity without sacrificing convenience and efficiency. The "Power Ring" collet resizer returns bases to factory specification, regardless of whether they're brass or steel heads, high or low base. Factory set for 3-1/2" shells. Adjustable for 2-7/8" shells with the MEC Short kit (sold separately). Additional die sets (to change gauges) are available. E-Z Prime primer feeder included on 10,12, 16, 20, 28 gauge models.

Technical Information:

Press Type: Single Stage

Gauge: 10 Gauge

Shell Length: Set by the factory at 3-1/2" but can be adjusted to 2-7/8" length with the MEC short kit (sold separately)

Frame Material: Steel Frame

  • Power Ring Collet Resizer (returns every base to factory specs, whether brass or steel)
  • Cam-action Crimp Die
  • Spindex Crimp Starter (swivels to align itself correctly with original shell creases)

  • Priming Feature: E-Z Prime Automatic Primer Feeder (except on 410 bore models)

  • 2 ounce Charge Bar (lead shot only)
  • Three Interchangeable Powder Bushings (others available separately)

  • Load Rate: Can load 6 to 8 boxes of shells per hour (approximately 150 to 200 shells)

    Charge Bar Shot Weight: 2oz

    Powder Bushings Included: 37, 40, 44

    Gauge Conversions Available: Yes


  • Factory set for 3-1/2" shells.
  • Adjustable for 2-7/8" shells with MEC Short KIT #557151
  • Die sets are available separately for all gauges.
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