Lyman H&i Sizing Die .309

• .309 sizing diameter: Brings cast bullets to a consistent .309 diameter, which helps maintain uniform fit in the bore and supports more repeatable accuracy.
• Body sizing operation: This H&I die is built specifically for bullet sizing, giving reloaders a straightforward way to produce cast bullets with the correct final diameter before loading.
• Hardened steel construction: The steel sizing die stands up to repeated use and helps preserve dimensional consistency over long casting and reloading sessions.
• Tapered, alignment-focused design: Lyman’s H&I sizing dies use a tapered mouth and hardened interior to guide bullets into the die more smoothly and help maintain a true cylindrical shape.
• Standard 7/8"-14 compatibility: The standard thread pattern makes the die easy to integrate into common reloading press setups without requiring a specialized mounting system.

About the Series

Lyman H&I Sizing Dies are part of the company’s bullet-casting and cast-bullet reloading range, intended for reloaders who want tighter control over bullet diameter and lubrication. In Lyman’s lineup, these dies sit alongside the brand’s 4500 Lube Sizer and related casting tools, forming a practical system for finishing cast bullets before they are loaded. Their role is simple but important: size the bullet correctly, support proper lubrication flow, and help maintain bullet shape.

The series is built around field-proven mechanical simplicity. Lyman uses a tapered mouth to guide bullets into the die and a hardened interior to support alignment and long service life. The improved design with 90° hole spacing is intended to make bullet lubrication easier, including when harder lubricants are used. These dies are offered in a wide range of diameters for popular rifle and pistol calibers, so the series appeals to handloaders who cast for multiple firearms and want a dependable way to match bullet size to barrel requirements.

About the Lyman H&i Sizing Die .309

The Lyman H&i Sizing Die .309 is a dedicated bullet-sizing die for reloaders working with cast bullets that need a final diameter of .309. In practical terms, that makes it a useful choice for many .30 caliber cast-bullet applications where correct bullet fit is essential for accuracy, controlled pressure, and clean performance. Rather than treating bullet sizing as a minor finishing step, this die addresses one of the key variables in cast-bullet loading: making every projectile as uniform as possible before it reaches the seating stage.

Its steel construction is suited to repeated workshop use, while the standard 7/8"-14 thread keeps installation straightforward in common press setups. As a standard, non-bushing die, it favors a simple and robust approach that fits well in established reloading benches. Lyman’s H&I design also uses a tapered entry and hardened interior, which helps the bullet enter the die more smoothly and supports consistent alignment during sizing. That matters because preserving a true cylindrical form is just as important as reaching the target diameter.

For bullet casters using a Lyman lubricator/sizer setup, this die serves as a practical tool for producing uniform bullets ready for loading. The result is a more controlled reloading process, especially for shooters who want cast bullets that chamber consistently and perform predictably on the range.

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. Today, Lyman Products is headquartered in Middletown, Connecticut and focuses on tools and accessories for shooting and ammunition loading. Its range includes reloading dies, presses, bullet-casting equipment, and gun sights, which places the company firmly in the traditional handloading and shooting market.

Lyman’s history in this field is broad. Lyman acquired the Ideal reloading-tool business in 1925, helping establish its place in reloading equipment, while its tang and receiver sights still reflect principles from William Lyman’s original sight design. That combination of long-running product categories and continued support for bullet casting and reloading tools is what makes the brand especially relevant for products such as H&I sizing dies.

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: 7.85 mm
• Bullet diameter: 309.00 inch

Warranty

2 years. Lyman states a 2-year warranty for this product, providing defined coverage rather than an open-ended warranty term.