Is the Redding 21456 decapping rod assembly compatible with Redding Type-S Bushing Dies?

No, this assembly is not compatible with Type-S Bushing Dies, which utilise a different retention system without a conventional fixed expander ball. It is specifically engineered as a direct factory-replacement rod for Redding standard bottleneck full-length or neck sizing dies in .458 calibre.

What specific cartridge cases can I reload using this .458 calibre decapping assembly?

The Redding 21456 is designed for big-bore rifle cartridges such as the .458 Winchester Magnum and .458 Lott. It simultaneously punches out spent primers and expands the case neck to proper internal dimensions using its integrated .458 size expander button.

Does this mechanical reloading component require any Australian electrical certifications or 240V power?

No, electrical compliance, 240V power ratings, and SAA/RCM certifications are entirely inapplicable to this product. As a 100% mechanical steel reloading press component, it operates purely through manual handloading leverage on your reloading bench.

Will this decapping rod assembly work with brass cases that feature small flash holes?

The standard decapping pin included in this assembly is built for standard boxer flash holes measuring approximately 0.080 inches or 2.0 mm. If you are reloading specialised brass with small flash holes measuring 0.060 inches or 1.5 mm, you will need to swap in a specialised undersized decapping pin.

.458 Decapping Rod - Redding 21456

The Redding .458 Cal Decapping Rod Assembly (MPN: 21456) is a factory-original replacement component designed for Redding bottleneck full-length and neck sizing dies. Engineered from precision-machined, heat-treated steel, this mechanical assembly performs a dual operation during the reloading stroke: it ejects spent boxer primers from brass cases and expands the case neck to uniform internal dimensions. It allows handloaders to service and maintain damaged, bent, or stripped sizing die internals without replacing the complete die set.

Key Features

Dual-Action Processing: Simultaneously removes spent primers and expands the case neck to factory internal dimensions during extraction.
Direct Factory Replacement: Fully replaces the internal threaded stem, .458 size expander ball, and standard decapping pin inside compatible Redding standard dies.
Heat-Treated Steel Construction: Machined to strict tolerances to ensure alignment and withstand the extraction forces of heavy big-bore cartridge brass.
Standard Boxer Primer Compatibility: Fitted with a standard pin suited for standard 0.080-inch (2.0 mm) boxer flash holes.

Product Specifications

Brand: Redding Reloading Equipment
Manufacturer Part Number (MPN): 21456
Product Type: Reloading die decapping rod assembly
Calibre Compatibility: .458 calibre (e.g., .458 Winchester Magnum, .458 Lott)
Die Thread Standard: Standard 7/8"-14 threaded sizing die bodies
Included Components: Threaded steel decapping rod, .458-calibre expander button, standard decapping pin
Flash Hole Compatibility: Standard Boxer (~0.080" / 2.0 mm)
Power Requirements: None (manual workshop tool)

Who is the Redding .458 Cal Decapping Rod Assembly for?

Big-bore handloaders — provides the exact .458 calibre expander ball and stem required to deprime and properly size the case necks of heavy-recoil .458 Winchester Magnum and .458 Lott rifle cartridges.
Reloaders servicing Redding dies — restores damaged internal decapping stems directly inside standard 7/8"-14 threaded full-length and neck sizing dies to maintain proper concentricity.

Less suitable for: Handloaders sizing other calibres such as .30 calibre, 7mm, or .375 (which require their specific calibre-matched decapping assemblies), reloaders using Type-S Bushing Dies (which require dedicated bushing-style decapping stems without fixed expander balls), or cases featuring 0.060-inch (1.5 mm) small flash holes (which require specialised undersized decapping pins).

SKU	RD41480LP
Model #	21456
Brand	Redding
Shipping Weight	1.0000kg

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Redding 21456 Decapping Rod Assembly .458 Caliber Steel

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