Is the Redding 84924 die set compatible with standard .338 Remington Ultra Magnum factory ammunition?

No, this custom deluxe die set is specifically chambered for the .338/300 RUM, popularly known as the .338 Edge wildcat cartridge. It is not compatible with standard factory .338 RUM brass because the .338 Edge features a longer shoulder-to-neck dimension created by necking up .300 RUM brass.

What shellholder do I need to use with this die set on my reloading press?

The Redding 84924 uses a standard 7/8"-14 TPI thread interface compatible with industry-standard single-stage and turret reloading presses. For proper operation, you will need to pair it with a Redding Shellholder #6 (Part #11006) or the Redding Competition Shellholder #6 (Part #11606), which are sold separately.

How should I maintain these steel dies to protect them against corrosion in humid Australian outback conditions?

Because these precision-machined alloy steel dies do not feature electrical components or require power, they rely on proper mechanical care in harsh environments. To prevent rust in humid climates, store them in dry conditions and apply a light coat of anti-corrosion oil or a vapour barrier after use. Always ensure proper case lubrication is used prior to full-length sizing to avoid stuck cases.

338 Edge Die Set - Redding 84924

The Redding 338/300 Remington Ultra Magnum (338 Edge) Custom Deluxe Die Set (MPN: 84924) is a precision 3-die set manufactured for handloaders forming and reloading the .338/300 RUM wildcat cartridge. CNC-machined from alloy steel, heat-treated in atmospheric furnaces, and hand-polished, this set prepares brass to load 8.58 mm (.338 in) diameter bullets into necked-up .300 RUM cases. Built with industry-standard 7/8"-14 TPI threads, it mounts directly to standard single-stage and turret reloading presses to produce ammunition for extreme long-range target shooting and big-game hunting.

Key Features

3-Die Versatility: Contains a Full Length Sizing Die (Part #91924) with decapping rod and expander button, a Neck Sizing Die (Part #81924) to extend brass life for bolt-action rifles, and a Standard Bullet Seating Die (Part #92924) featuring a built-in crimp ring.
Precision Construction: Heat-treated alloy steel construction ensures tight chamber tolerances and uniform dimensions across repeated sizing operations.
Standard Thread Mounting: 7/8"-14 TPI thread interface ensures compatibility with standard manual reloading presses without requiring proprietary adapters.
Maintenance Accessories Included: Ships with a spare decapping pin and hex wrench for adjustment and upkeep.

Specifications

Product Name: Redding 338/300 Remington Ultra Magnum (338 Edge) Deluxe Die Set
Manufacturer Part Number (MPN): 84924
Cartridge Compatibility: .338/300 Remington Ultra Magnum (.338 Edge)
Compatible Bullet Diameter: .338 in (8.58 mm)
Die Thread Interface: 7/8"-14 TPI
Required Shellholder: Redding Shellholder #6 (Part #11006) or Competition Shellholder #6 (Part #11606) (sold separately)
Operating Mechanism: Manual mechanical operation (requires single-stage or turret press)
Package Shipping Weight: Approximately 0.6 kg to 0.7 kg

Who is the Redding 338/300 Rum Remington Ultra Magnum (338 Edge) Deluxe Die Set for?

Extreme long-range precision target shooters — Requires sizing and seating for the .338/300 RUM cartridge to shoot 8.58 mm (.338 in) diameter projectiles over target distances ranging from 600 m to 2,000+ m using standard 7/8"-14 TPI single-stage reloading presses.
Big-game hunters — Uses this custom reloading die set to full-length size .338 Edge brass with standard Redding #6 shellholders, ensuring dependable chambering and field reliability for high-velocity magnum rifle loads.

Less suitable for: High-volume progressive loading setups requiring non-lubricated carbide dies, standard factory .338 RUM or .300 RUM chambers due to differing shoulder dimensions, or precision reloaders requiring micrometer-depth adjustments and interchangeable bushing neck-tension control, who are better served by Type S-Bushing and micrometer competition seating dies.

SKU	RD41958LP
Model #	84924
Brand	Redding
Shipping Weight	1.0000kg

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Redding 84924 Custom Deluxe Die Set 338 Edge 3-Die Set

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