Will this 3-die set work with standard reloading presses available in Australia?

Yes, the Redding 84527 Deluxe Die Set features the industry-standard 7/8"-14 TPI thread pattern, making it fully compatible with single-stage and turret reloading presses from major brands like Redding, RCBS, Lyman, and Hornady commonly used by Australian handloaders.

What shellholder do I need to use with the Redding 338/378 Wby Magnum Deluxe Die Set?

This die set requires a Redding #18 Standard Shellholder (Part #11018) or a #11618 Competition Shellholder, which must be purchased separately. It is specifically engineered for the bottlenecked .338/378 Weatherby Magnum cartridge and cannot be used with other .338-calibre cartridges like the .338 Win Mag or .338 Lapua Mag.

What is included in the 3-die deluxe set for the .338/378 Weatherby Magnum?

The Model 84527 set includes three precision-machined alloy steel dies: a Full-Length Sizing Die with a decapping rod and neck expander button, a Neck Sizing Die for fire-formed brass, and a Bullet Seating Die featuring a built-in crimp capability. This combination gives you the versatility to either resize the entire case for guaranteed chambering or neck-size only to extend brass life for long-range precision shooting.

Does this reloading die set require any Australian electrical compliance or SAA/RCM certification?

No electrical compliance or SAA/RCM certification is required. The Redding 84527 is a strictly non-powered, mechanical benchtop tool used for metallic cartridge reloading in your workshop or reloading room.

338 378 Die Set - Redding 84527

The Redding Deluxe 3-Die Set for .338/378 Weatherby Magnum (SKU 84527) is a precision metallic cartridge reloading system designed for handloaders working with high-velocity .338-calibre loads. Machined from high-grade alloy steel with polished internal surfaces, this set includes a full-length sizing die with an integrated decapping rod and neck expander button, a dedicated neck sizing die, and a bullet seating die with built-in crimp capability. Built to the industry-standard 7/8"-14 TPI thread pattern, these non-powered mechanical dies fit standard single-stage and turret reloading presses.

Key Features

Dual Sizing Configuration: Includes both a full-length sizing die (#91527) for hunting and mixed brass chamber reliability, and a neck sizing die (#81527) to maintain fire-formed case geometry and extend brass longevity.
Precise Bullet Seating: Features a dedicated seating die (#92527) capable of precise bullet alignment and integrated crimping for .338" (8.58 mm) projectiles.
Alloy Steel Construction: Built on precision lathes from heat-treated alloy steel to ensure tight tolerances and reduced brass friction during resizing.
Universal Press Mounting: Uses standard 7/8"-14 threads to integrate seamlessly with standard benchtop metallic reloading presses.

Specifications

Cartridge: .338/378 Weatherby Magnum
Bullet Diameter Compatibility: .338" / 8.58 mm
Die Thread Standard: 7/8"-14 TPI
Die Set Contents: Full-Length Sizing Die (#91527), Neck Sizing Die (#81527), Bullet Seating Die (#92527)
Required Shellholder: Redding #18 Standard Shellholder (#11018) or #11618 Competition Shellholder (sold separately)
Packaged Weight: Approximately 0.68 kg to 0.75 kg
Operation Type: Manual, non-powered mechanical bench tool

Who is the Redding 338/378 Wby Weatherby Magnum Deluxe Die Set for?

Long-range precision shooters — requires a dedicated neck sizing die within this Deluxe reloading die set to maintain fire-formed case dimensions for the .338/378 Weatherby Magnum cartridge while maintaining concentricity on standard 7/8"-14 TPI bench presses.
Big-game hunters — relies on the full-length resizing capability of this 3-die set to guarantee chamber clearance for .338" (8.58 mm) projectile handloads using a compatible #18 shellholder.

Less suitable for: Handloaders seeking to resize alternative .338-calibre cases, such as .338 Lapua Magnum or .338 Winchester Magnum, which require dedicated calibre-specific die sets, or benchrest shooters requiring thousandths-of-an-inch neck tension adjustment who need competition bushing dies.

SKU	RD41952LP
Model #	84527
Brand	Redding
Shipping Weight	1.0000kg

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Redding 84527 Deluxe Die Set 338 378 Weatherby Magnum 7 8 14 Tpi

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