MEC The Sizemaster Reloader

The MEC The Sizemaster Reloader is a single-stage reloading press designed for precision handloaders and ammunition enthusiasts who seek consistent, high-quality cartridge production. This press is ideal for competitive shooters, hunting enthusiasts, and dedicated reloaders looking to optimize their performance loads for various firearms.

Engineered by Mayville Engineering Co., the Sizemaster features a robust cast-iron frame that provides mechanical advantage and vibration dampening. Its single-stage platform allows for controlled, sequential reloading operations—sizing, priming, powder charging, and seating—ensuring that each cartridge can be visually inspected before moving to the next stage, which helps eliminate defects.

Reloaders working with bottleneck rifle cartridges, pistol calibers, and magnum rounds will find the Sizemaster compatible with standard toolhead assemblies and die sets from major manufacturers. This compatibility, along with its ergonomic design, makes it a valuable tool for anyone serious about reloading their own ammunition.