Will the Redding 80781 450 Bushmaster die set fit my standard Australian reloading press?

Yes, this three-die set is built with industry-standard 7/8"-14 threads, making it fully compatible with single-stage, turret, and progressive reloading presses commonly used in Australia from brands like Redding, RCBS, Hornady, and Lee.

What shellholder do I need to use with the Redding 80781 450 Bushmaster Full Length Die Set?

This die set requires a standard Redding #1 Shellholder (part #11001), which is sold separately. Ensure you have this specific shellholder ready on your press to correctly cycle your 450 Bushmaster brass through the sizing and seating operations.

Do I need to lubricate my brass before using the full-length sizing die in this set?

Yes, because this set features a heat-treated alloy steel sizing die, you must apply a high-grade case sizing lubricant prior to full-length sizing. Skipping this crucial step will result in stuck cases becoming jammed inside the steel sizing die.

Does this Redding 450 Bushmaster die set require any electrical compliance or SAA/RCM certification for use in Australia?

No electrical compliance or SAA/RCM certifications are required. The Redding 80781 is a purely manual mechanical tool with no electrical components or 240V mains requirements, making it ready to set up straight out of the box for your outback reloading bench.

.450 Bushmaster Die Set - Redding 80781

The Redding 80781 450 Bushmaster Full Length Reloading Die Set is a precision three-die system designed to process straight-wall .450 Bushmaster brass. Machined from heat-treated alloy steel, this set performs the full-length sizing, case mouth expansion, and bullet seating required to restore fired brass to SAAMI-compliant chamber dimensions. Featuring standard 7/8"-14 threading, these dies mount directly into standard Australian-market reloading presses to support the handloading of .452" diameter projectiles.

Key Features:

Dedicated Three-Die Setup: Includes a full-length sizing die with decapping assembly, a dedicated expander die to create proper mouth flare on straight-wall cases, and a bullet seating die with an integrated crimp ring.
Precision Machined Construction: Turned on Hardinge Super-Precision lathes from alloy steel, heat-treated in atmospheric furnaces, and hand-polished for smooth operation.
Standard Press Integration: Standard 7/8"-14 thread pattern ensures compatibility across standard single-stage, turret, and progressive reloading presses.
Included Accessories: Supplied in a plastic storage box that functions as a cartridge loading block, complete with a hex wrench and a spare decapping pin.

Specifications:

Calibre: .450 Bushmaster
Compatible Bullet Diameter: .452"
Thread Size: Standard 7/8"-14
Shellholder Required: Redding #1 Shellholder (part #11001)
Die Parts Included: Sizing Die (#91781), Expander Die (#93781), Seating Die (#92781)
Packaged Weight: Approximately 1.72 lbs (0.78 kg)
Operation: Manual mechanical

Who is the Redding 450 Bushmaster Full Length Reloading Die Set for?

Handloaders reloading 450 Bushmaster for hunting rifles — Sizes straight-wall cases back to SAAMI factory dimensions and flares case mouths specifically for seat-and-crimp operations on .452" diameter projectiles using this dedicated 450 Bushmaster reloading die set.
Target shooters producing custom 450 Bushmaster ammunition — Mounts via standard 7/8"-14 reloading press threading and pairs with a Redding #1 Shellholder to provide consistent mechanical alignment across single-stage and turret presses.

Less suitable for: Reloaders seeking to process bottleneck cartridges or alternative straight-wall calibres such as .458 SOCOM or .45-70 Government, which require calibre-specific sizing dies, or handloaders processing brass without high-grade case sizing lubricant, which will result in stuck cases inside non-carbide steel sizing dies.

SKU	RD102437LP
Model #	80781
Brand	Redding
Shipping Weight	0.2000kg

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Redding 80781 450 Bushmaster Die Set 3-Die Straight Wall

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