The Lyman H&I Bullet Sizing Die .429 (SKU: LY-HI429) is a precision-engineered reloading tool designed for bullet casters who require exact dimensions for their cast lead projectiles. This high-quality component sizes cast bullets down to a uniform .429-inch diameter (approximately 10.90 mm) while simultaneously applying bullet lubricant. Manufactured with a hardened and polished steel interior, the die ensures exceptional cylindrical alignment and bullet concentricity, which directly translates to improved downrange accuracy. It is designed to fit seamlessly into Lyman 450, Lyman 4500 Lube Sizers, and RCBS Lube-A-Matic bullet sizing and lubricating presses, making it a versatile addition to your reloading setup.

Key Features of the Lyman H&I Size Die .429:

• 90-Degree Hole Spacing: The improved Hole and Inlet (H&I) design features 90-degree lubrication hole spacing around the circumference of the die. This configuration ensures even, consistent distribution of bullet lubricant into the grease grooves, even when working with modern, high-temperature hard lubricants.
• Precision-Tapered Mouth: The entry mouth of the die is carefully tapered to guide cast lead bullets smoothly into the sizing chamber. This design prevents lead shaving and protects the delicate bullet base from damage during the sizing process.
• Hardened Steel Interior: Built to withstand the high pressures of bullet sizing, the interior chamber is hardened and polished to guarantee long-lasting durability and consistent, repeatable sizing dimensions.
• Mechanical Operation: This reloading accessory is a fully mechanical hand-tool component, requiring no electrical power, batteries, or external power sources to operate.

Product Specifications:

• Brand: Lyman
• Model/SKU: LY-HI429 (Lyman Part Number: 2766509)
• Sizing Diameter: .429 inches (approximately 10.90 mm)
• Material: Hardened steel interior with a polished finish
• Compatibility: Fits Lyman 450, Lyman 4500 Lube Sizers, and RCBS Lube-A-Matic presses
• Length: Approximately 5 cm
• Weight: Under 100 grams
• Power Requirements: None (purely mechanical)

Who It Is For:

The Lyman H&I Bullet Sizing Die .429 is specifically designed for Australian target shooters, hunters, and handloaders who cast their own lead projectiles. It is an essential tool for those reloading popular .44 caliber firearms, including the .44 Magnum, .44 Special, and .44-40 Winchester, where a precise .429-inch bullet diameter is required to match the barrel's groove diameter. Because this is a purely mechanical reloading accessory, it does not require electrical power, meaning standard Australian electrical safety certifications, 240V mains compatibility, and AS/NZS 3112 plug configurations are not applicable. This makes it a reliable, lifetime tool for any Australian reloading bench, ensuring consistent performance in local shooting conditions.