Lyman H&i Sizing Die .313

• .313 sizing diameter: This die brings cast bullets to a consistent .313 diameter, helping maintain proper fit in suitable calibers and supporting more uniform accuracy on target.
• Body sizing operation: The die is built for bullet body sizing, giving reloaders a straightforward way to control finished bullet dimensions before loading and lubrication.
• Tapered mouth design: Lyman’s improved H&I sizing dies use a tapered entry that helps guide bullets into the die more smoothly, reducing the chance of misalignment during sizing.
• Hardened steel interior: The steel construction and hardened interior support long service life and help the die hold its dimensions through repeated use on the bench.
• Standard 7/8"-14 thread: Compatibility with standard presses makes it easy to integrate this die into established reloading setups without special adapters.

About the H&I Sizing Dies Series

Lyman H&I Sizing Dies are part of the company’s long-established bullet-casting and reloading range, aimed at reloaders who want tighter control over cast-bullet fit. In Lyman’s lineup, these dies sit alongside the brand’s lube-sizing equipment and are intended for use with shooters who cast their own bullets for handgun and rifle cartridges. The series is built around a simple purpose: bring bullets to a precise finished diameter while supporting proper lubrication in a compatible sizing setup.

Lyman’s improved design uses 90° hole spacing for easier bullet lubrication with modern hard lubes, while the tapered mouth helps start bullets straight into the die. A hardened interior is used to maintain alignment and preserve a consistent cylindrical shape through repeated use. Because these dies are offered across a wide range of diameters, the H&I series gives reloaders a practical way to match bullet size to caliber requirements, firearm dimensions, and preferred cast-bullet loads. The result is a system focused on repeatability, bench efficiency, and better control over one of the key variables in cast-bullet performance.

About the Lyman H&i Sizing Die .313

The Lyman H&i Sizing Die .313 is a single body sizing die made for reloaders working with cast bullets that need a finished diameter of .313. That makes it a useful choice for suitable .32-caliber applications where bullet fit plays an important role in accuracy, leading control, and reliable chambering. Rather than treating bullet diameter as an afterthought, this die lets the reloader standardize that dimension as part of the loading process.

The die uses a steel construction with a hardened sizing interior, which matters in practice because it helps the tool keep its shape over repeated use and supports uniform results from bullet to bullet. Lyman’s tapered-mouth design also has a practical benefit at the bench: bullets enter the die more smoothly and with better alignment, which helps preserve a true cylindrical form during sizing. In a cast-bullet workflow, that consistency can make lubrication and seating more predictable.

With its standard 7/8"-14 thread, this die fits common reloading presses, so it integrates easily into an existing setup. As a single standard die without bushings or special adjustment hardware, it keeps operation straightforward for reloaders who want a dedicated sizing tool matched to one bullet diameter.

About Lyman

Lyman traces its origins to 1878, when the Lyman Gun Sight Company began in Middlefield, Connecticut. Over time, the company expanded from sight-making into a broader shooting and reloading business, with a strong focus on practical tools for handloaders and bullet casters. Lyman Products is now headquartered in Middletown, Connecticut, and its catalog covers reloading dies, presses, bullet-casting equipment, gun sights, and related accessories.

A key part of Lyman’s identity is its long continuity in traditional shooting equipment. The company acquired the Ideal reloading-tool business in 1925, reinforcing its place in the reloading market, and its tang and receiver sights still reflect principles from William Lyman’s original sight design. That background is especially relevant in products like bullet-sizing dies, where Lyman’s reputation rests on durable bench tools built for repeatable, workshop-focused 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
• Adjustment: Standard
• Press compatibility: Standard 7/8"-14 thread
• Bullet Diameter (mm): 7.95 mm
• Bullet Diameter (inch): 313.00 inch

Warranty

Lyman covers this product with a 2-year warranty. This gives the reloader a clearly stated period of manufacturer support for defects in materials or workmanship.