What reloading press thread size and shellholder do I need to use with the Redding 81428 neck die?

The Redding 280 Remington Ackley Improved Neck Die features a standard 7/8"-14 thread pitch that fits virtually all standard single-stage and turret reloading presses. To operate this die, you will also need to acquire a standard Redding #1 shellholder (part #11001), which is sold separately.

Can I use this neck sizing die if I shoot my .280 Ackley Improved in a semi-automatic or lever-action rifle?

No, neck-sizing dies like the Model 81428 are restricted to bolt-action rifles where fire-formed brass is returned to the exact same chamber. Semi-automatic, lever-action, and pump-action firearms require full-length resizing, such as the Redding Full Length Die #91428, to ensure reliable chambering and extraction.

How do I know when my .280 AI brass requires full-length sizing instead of just neck sizing?

While neck sizing extends brass life and maintains maximum concentricity for your .280 Remington Ackley Improved, the case body will eventually expand over multiple reload cycles. When you notice that bolt closure becomes stiff after 3 to 5 firings, you must temporarily switch to a full-length sizing or body die to reset the shoulder and case body dimensions.

Do I need any special firearms licenses or import permits to purchase this reloading die in Australia?

No import permits or firearms licences are required under Australian regulations to purchase or possess reloading dies, as they are non-firearm components. However, please ensure you comply with your local state-based licensing and storage regulations regarding ammunition powders, primers, and completed cartridges.

280 AI Neck Die - Redding 81428

The Redding 280 Remington Ackley Improved Neck Die is a precision reloading tool engineered to decap and resize the case neck of fire-formed .280 Ackley Improved brass without altering the case body or shoulder dimensions. Manufactured in the USA from heat-treated alloy steel, this die resets neck tension for .284 in (7.21 mm) diameter projectiles while preserving the fire-formed fit of the cartridge case to a specific bolt-action rifle chamber. This eliminates unnecessary working of the brass body, extending case life and enhancing shot-to-shot concentricity.

Key Features

Neck-Only Resizing: Resets neck tension and extracts spent primers without sizing the case body or bumping the shoulder back.
Precision Steel Construction: Machined from heat-treated alloy steel and fitted with a knurled lock ring for repeatable press setups.
Standard Press Mounting: Uses an industry-standard 7/8"-14 thread pitch to ensure compatibility across single-stage and turret reloading presses.
Complete Decapping Assembly: Includes steel decapping rod assembly (#25283), decapping pin (#01060), and steel expander button (#40283).

Specifications

Cartridge: .280 Remington Ackley Improved
Bullet Diameter: .284 in (7.21 mm)
Thread Pitch: 7/8"-14 standard
Material: Heat-treated alloy steel
Shellholder Requirement: Redding #1 shellholder (sold separately)
Internal Components: Steel decapping rod (#25283), standard pin (#01060), size button (#40283)

Who is the Redding 280 Remington Ackley Improved Neck Die for?

Bolt-Action Precision Handloaders — Sizes fire-formed brass exclusively at the neck for .284 in (7.21 mm) bullet seating, preserving custom chamber-formed body dimensions to maximise bore alignment and brass longevity in bolt-action rifles.
Long-Range Target Shooters and Hunters — Utilises a 7/8"-14 thread pitch to fit standard reloading presses, providing consistent neck tension on .280 Ackley Improved cases across multiple firing cycles without overworking the shoulder.

Less suitable for: Semi-automatic, pump-action, or lever-action rifles, as well as cases that have developed stiff bolt closure after 3 to 5 firings; these conditions require a full-length sizing die or dedicated body bump die to restore critical chamber clearances.

SKU	RD41919LP
Model #	81428
Brand	Redding
Shipping Weight	1.0000kg

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Redding 81428 280 Remington Ackley Improved Neck Sizing Die

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