Lyman H&i Sizing Die .357

• .357 sizing diameter: Sizes cast bullets to .357, helping maintain the bullet fit needed for consistent accuracy in .38/.357 revolver and carbine loads.
• Body sizing operation: This die is built for straightforward bullet body sizing, making it a practical choice for reloaders who want repeatable dimensions before lubrication or final loading steps.
• Tapered mouth and hardened interior: The H&I design uses a tapered entry and hardened sizing surface to guide bullets into the die smoothly and help preserve a true cylindrical shape.
• 90° hole spacing: Lyman’s improved sizing die layout supports easier lubricant flow, which is especially useful when working with harder bullet lubes.
• Made in the USA steel construction: The steel die body provides the durability needed for regular bench use and long service in cast-bullet reloading setups.

About the H&I Series

Lyman H&I Sizing Dies are part of the company’s cast-bullet reloading and bullet-casting range, intended for shooters who want tighter control over bullet diameter and lubrication. In Lyman’s lineup, these dies are used with the brand’s lubricating and sizing equipment to bring cast bullets to a chosen finished diameter while supporting proper lube application. That makes the series especially relevant for reloaders building handgun and rifle ammunition around cast lead bullets, where bullet fit has a direct effect on accuracy, leading control and overall consistency.

The series is defined by a practical mechanical design rather than unnecessary complexity. Lyman’s improved H&I dies use 90° hole spacing to make bullet lubrication easier, including with harder lubricants. They also feature a tapered mouth and a hardened interior, which help align the bullet as it enters the die and maintain a more uniform cylindrical form. Interior dimensions are matched to common rifle and pistol bullet diameters, so the H&I range serves as a caliber-specific sizing system for reloaders who want predictable results from cast bullets.

About the Lyman H&i Sizing Die .357

The Lyman H&i Sizing Die .357 is a caliber-specific bullet sizing die for cast-bullet reloaders working with .357 diameter bullets. In practical terms, this die is aimed at shooters loading cast projectiles for cartridges in the .38/.357 class, where correct bullet diameter plays an important role in chamber fit, bore sealing and downrange consistency. A properly sized cast bullet can help reduce gas cutting and barrel leading while supporting more uniform performance from one round to the next.

This model uses a body sizing operation and a standard H&I steel construction, giving it the durability expected for repeated use on the loading bench. The die’s tapered mouth helps start the bullet into the sizing section with better alignment, while the hardened interior supports smooth sizing and helps maintain the bullet’s cylindrical form. Lyman’s improved hole spacing is also relevant in use, because it allows lubricant to flow more easily around the bullet during the sizing process, which is helpful when using harder lubes.

With its standard 7/8"-14 thread compatibility, the die fits common press setups used by reloaders, making it easy to integrate into an established cast-bullet workflow. For shooters who cast their own bullets and want a dedicated .357 sizing solution, this die offers a simple, durable and repeatable way to prepare bullets for accurate handloads.

About Lyman

The Lyman Gun Sight Company began in 1878 in Middlefield, Connecticut, and the brand has long been associated with practical equipment for shooters and reloaders. Over time, Lyman expanded beyond sights into a broad catalog that includes reloading dies, presses, bullet-casting equipment and other shooting accessories. That background is especially relevant here, because cast-bullet sizing tools sit squarely within the company’s long-established reloading and bullet-casting expertise.

Lyman also absorbed the Ideal reloading-tool business in 1925, strengthening its place in the handloading market. Today, Lyman Products is headquartered in Middletown, Connecticut and continues to make equipment and accessories for shooting and reloading. The company’s long involvement in both sighting products and bench equipment gives it a well-established reputation among reloaders who value straightforward tools built for regular use.

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: 9.07 mm
• Bullet diameter: 357.00 inch

Warranty

2 years. This product is covered by a 2-year warranty, making it a straightforward choice for reloaders who want defined manufacturer support.