The MEC Sizemaster is an all-in-one, single-stage reloader that offers simplicity and efficiency without sacrificing precision. Loaded with premium features like the E-Z Prime automatic primer feed and “Power Ring” collet resizer that returns every base to factory specifications. The new generation resizing station handles brass or steel heads, both high and low base. Adjustable for 3 shells, and available in 12, 20, 28 gauge and .410 bore (.410 not available with automatic primer feed). Includes 1 Charge Bar and 3 Powder Bushings.
Big Book Catalog, Issue:66, Page:517
Sinclair, Issue:4A, Page:068