Redding Expander Die .458 Lott

• Dedicated neck expansion: This die expands the case neck in a controlled way so bullets start straighter during seating, helping maintain consistent neck tension and reducing the chance of shaving or deforming bullets.
• Built for .458 Lott brass: The geometry suits a large, heavy rifle cartridge where smooth case-mouth preparation matters for reliable handloads and repeatable ammunition assembly.
• Steel die construction: A steel body stands up to repeated loading sessions and helps the die hold its dimensions over time, which supports uniform results from batch to batch.
• Standard 7/8"-14 thread: The common press thread makes the die easy to integrate into most conventional reloading setups without special adapters or proprietary hardware.
• Single-purpose setup: As a dedicated expander die, it focuses on one critical step of case preparation, giving reloaders more control over brass handling than a combined die arrangement.

About the Expander Die Series

Redding Expander Dies are purpose-built tools for reloaders who want more control over case-mouth preparation than a basic all-in-one die arrangement provides. In the Redding lineup, they sit alongside the company’s broader family of rifle and handgun dies as specialized tools intended to refine one important stage of the loading process: preparing the neck or mouth of the case for smooth bullet seating. That focus makes them especially useful when working with cartridges that benefit from careful neck tension management or where bullet alignment during seating has a direct effect on consistency.

The series follows Redding’s practical die-design philosophy: durable steel construction, conventional press compatibility, and dimensions intended for repeatable setup on standard loading equipment. Rather than adding unnecessary complexity, these dies are designed to make expansion more uniform and predictable, which helps reduce stress on brass and supports cleaner bullet entry into the case. For reloaders assembling hunting or heavy rifle ammunition, a dedicated expander die can be a useful addition when consistent case preparation matters as much as the final seating step.

About the Redding Expander Die .458 Lott

The Redding Expander Die .458 Lott is a dedicated neck-expanding die made for one of the more substantial dangerous-game rifle cartridges in common use. With a bullet diameter of 11.63 mm / .458 inch, the cartridge places real demands on brass preparation, because the case mouth must be opened enough for smooth bullet entry without creating unnecessary working of the neck. This die addresses that step directly, helping the reloader prepare cases for more controlled seating and more uniform finished ammunition.

In practical use, the benefit of a separate expander die is not simply that it enlarges the neck, but that it does so in a more deliberate stage of the loading sequence. That can help reduce scraping during bullet seating, lower the chance of disturbing bullet alignment at the start of seating, and support more consistent neck tension from round to round. On a cartridge such as .458 Lott, often associated with heavy bullets and field ammunition where dependable chambering matters, that extra control is worthwhile.

The die uses steel construction and a standard 7/8"-14 thread, so it fits conventional presses and suits established bench setups without special tooling. Its straight case-body design and standard adjustment layout keep operation familiar for experienced handloaders. For reloaders building .458 Lott ammunition, this die is a straightforward tool for improving the transition between sized brass and seated bullet while helping preserve brass condition over repeated loading cycles.

About Redding

Redding Reloading Equipment was founded by Burr Bement in 1946 in Virgil, New York. The company later became Redding-Hunter, Inc. in 1956, and in the 1960s it began marketing its products under the Redding Reloading Equipment name. From the beginning, Redding has focused on tools and equipment for handloading ammunition, building a reputation around dies, presses, powder measures, scales, and case-preparation tools.

Redding remains based in Cortland, New York, United States, and its catalog is especially well known among reloaders who want precise, repeatable die systems for rifle cartridges. The company’s range includes conventional dies as well as more specialized products such as Type S bushing dies and Competition series dies, which have made the brand familiar to both hunting and precision-oriented handloaders.

Main Features

• Manufacturer: Redding
• Made in: USA
• Die operation: Neck expanding
• Pack size: Single
• Die type: Standard
• Bushing: No
• Case body design: Straight
• Case type: Rifle
• Sizing die material: Steel
• Material: Steel
• Adjustment: Standard
• Press compatibility: Standard 7/8"-14 thread
• Bullet diameter: 11.63 mm
• Bullet diameter (inch): 458.00 inch
• Compatible caliber: .458 Lott

Warranty

2 years. This product is covered by a 2-year warranty.