Lyman H&i Sizing Die .501

• .501 sizing diameter: This H&I sizing die is matched to .501 cast bullets, helping reloaders bring bullet diameter into the correct range for consistent fit, cleaner bore behavior, and better downrange accuracy.
• Body sizing operation: The die sizes the bullet body to a uniform diameter, which supports more even chambering and steadier ballistic performance when loading cast bullets.
• Steel construction: A steel sizing die stands up well to repeated use on the loading bench and maintains the dimensional stability needed for repeatable bullet sizing.
• Standard 7/8"-14 thread compatibility: The standard thread pattern fits common presses and related reloading equipment, making it easier to integrate into an established casting and loading setup.
• Single-die format: As a single H&I die, it lets the reloader choose the exact diameter needed for a specific bullet and caliber application instead of buying an entire die set.

About the Lyman H&I Sizing Die Series

Lyman H&I sizing dies are part of the company’s long-established bullet-casting and reloading range, intended for shooters who cast their own bullets and want tighter control over final bullet diameter. In the Lyman lineup, these dies work with the brand’s lubricating and sizing equipment to turn as-cast bullets into more uniform projectiles for handgun and rifle use. That makes them especially relevant to reloaders who tune loads for accuracy, manage fit to a particular bore, or work with cast bullets across several calibers.

The series is built around a simple idea: proper bullet diameter matters to both accuracy and shooting consistency. Lyman’s H&I dies are made in a wide range of diameters so the reloader can match bullet size to the application rather than rely on a one-size-fits-all approach. In practice, that helps support better alignment in the bore, more consistent lubrication during the sizing process, and a more uniform finished bullet. The result is a practical tool family for cast-bullet shooters who value repeatability at the bench and predictable performance on the range.

About the Lyman H&i Sizing Die .501

The Lyman H&i Sizing Die .501 is a dedicated bullet sizing die for reloaders working with cast bullets that need a final diameter of .501. That makes it a relevant choice for large-caliber cast-bullet applications where correct bullet fit is critical to obtaining stable accuracy and dependable loading results. By bringing bullets to a controlled finished diameter, it helps reduce variation from one projectile to the next, which is important when building consistent handloads.

This model uses a body sizing operation and a steel die construction, giving it the straightforward durability expected from bench reloading tools that see repeated use. In practical terms, the die is designed for reloaders who want a simple, caliber-specific sizing solution rather than a more complex adjustable system. Its standard 7/8"-14 thread compatibility also makes it easy to use with common press setups, so it can fit naturally into an existing casting or reloading workflow.

Because it is supplied as a single standard die, this model suits reloaders who already know the exact bullet diameter they need for their cast-bullet load development. That focused format is useful when refining loads around bullet fit, lubrication, and bore compatibility, especially in applications where small dimensional differences can affect how a cast bullet performs.

About Lyman

The Lyman Gun Sight Company began in 1878 in Middlefield, Connecticut, and the business remains closely associated with practical shooting equipment and reloading tools. Lyman Products is headquartered in Middletown, Connecticut, and its catalog centers on equipment and accessories for shooting and reloading. That background is especially relevant in products such as sizing dies, presses, and bullet-casting tools, where repeatable mechanical function matters more than unnecessary complexity.

Across its product range, Lyman is known for reloading dies, presses, bullet-casting equipment, and gun sights. The company expanded its reloading heritage further when it acquired the Ideal reloading-tool business in 1925, strengthening its place in the handloading category. This long involvement in casting and reloading is why Lyman remains a familiar name for shooters who build ammunition around careful bench work and proven tool designs.

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): 12.73 mm
• Bullet Diameter (inch): 501.00 inch

Warranty

Lyman states a 2-year warranty for this product. That period suits a bench tool intended for regular reloading use and provides clear manufacturer-backed coverage in years.