Lyman H&i Sizing Die .308

• Body sizing operation: This die is built to size the bullet body to a consistent diameter, helping cast bullets chamber more uniformly and reducing variation that can affect accuracy.
• .308 sizing diameter: The .308 format suits common .30 caliber cast-bullet applications, making it a practical choice for reloaders who want repeatable bullet fit in rifles that use this diameter.
• Steel construction: A steel sizing die stands up well to repeated use on the loading bench and maintains the dimensional stability needed for consistent bullet sizing over time.
• Tapered, hardened interior design: Lyman H&I sizing dies use a tapered mouth and hardened interior to support bullet alignment and help maintain a true cylindrical shape during sizing.
• Standard press compatibility: The standard 7/8"-14 thread fits widely used reloading presses, so the die integrates easily into an established cast-bullet loading setup.

About the H&I Series

Lyman H&I sizing dies are part of the company’s long-established bullet-casting and cast-bullet reloading range. They are intended for reloaders who cast their own bullets and need a reliable way to bring bullet diameter into line with the needs of a specific caliber, chamber or load. In practical use, correct bullet diameter matters because it affects chambering, leading control and the consistency of downrange results.

The series is designed for use with Lyman lube/sizer equipment, combining bullet sizing with the lubrication process that cast-bullet shooters rely on for smooth handling and predictable performance. Lyman describes these dies with a tapered mouth and hardened interior, features that help guide the bullet into the die and preserve a uniform cylindrical shape as it is sized. The improved design also uses 90° hole spacing to make bullet lubrication easier, including with harder lubricants. That makes the H&I line a practical choice for reloaders who want dependable, repeatable bullet preparation rather than a one-size-fits-all approach.

About the Lyman H&i Sizing Die .308

The Lyman H&i Sizing Die .308 is a caliber-specific tool for reloaders working with .30 caliber cast bullets who need a controlled final sizing step before loading. Its role is straightforward but important: it brings the bullet body to a uniform diameter so the finished projectile is better matched to the firearm and more consistent from one round to the next. For cast-bullet shooting, that consistency can help with chamber fit, reduce unnecessary bullet deformation and support more predictable accuracy.

This model uses body sizing operation in a standard steel die, giving it the durability expected from a bench tool that may see regular use in batch bullet preparation. The .308 sizing diameter makes it suitable for common rifle applications built around that bullet size, while the standard adjustment layout keeps setup simple for reloaders who prefer conventional tooling without extra bushings or specialized press interfaces. Because it uses a standard 7/8"-14 thread, it fits easily into many established reloading setups.

As part of Lyman’s H&I system, this die also benefits from the series design that emphasizes bullet alignment and lubrication flow. In practice, that means smoother operation during sizing and a more uniform finished bullet, which is exactly what matters when cast-bullet handloading is focused on repeatability rather than speed alone.

About Lyman

The Lyman Gun Sight Company began in 1878 in Middlefield, Connecticut, and it developed from a historic sight maker into a broad supplier of shooting and reloading equipment. Today, Lyman Products is headquartered in Middletown, Connecticut and is especially well known for tools used at the loading bench, including reloading dies, presses, bullet-casting equipment and gun sights.

The company’s background in both sighting equipment and handloading tools gives it a practical reputation among shooters who value established designs and workshop-focused functionality. Lyman’s tang and receiver sights still reflect principles from William Lyman’s original sight design, while its reloading range serves everyone from occasional handloaders to dedicated cast-bullet shooters. That long involvement in bullet casting and reloading is particularly relevant to the H&I sizing die line, which is built around the specific needs of shooters who want to size and lubricate cast bullets with repeatable results.

Main Features

• Manufacturer: Lyman
• Made in: USA
• Die operation: Body sizing
• Pack size: Single
• Die type: Standard
• Bushing: No
• Case type: Universal
• Sizing die material: Steel
• Material: Steel
• Adjustment: Standard
• Press compatibility: Standard 7/8"-14 thread
• Bullet Diameter (mm).: 7.82 mm
• Bullet Diameter (inch).: 308.00 inch

Warranty

2 years. The Lyman H&i Sizing Die .308 is covered by a 2-year warranty, making it a practical choice for reloaders who want established bench equipment backed by a clearly stated warranty period.