What reloading press thread standard does the Redding 81122 use, and does it require any electrical compliance for use in Australia?

The Redding 81122 features an industry-standard 7/8"-14 thread pattern, making it fully compatible with single-stage and progressive presses from major brands like Redding, RCBS, and Hornady. Because it is a purely mechanical hand-operated reloading tool, it does not require 240V power, an Australian plug, or SAA/RCM electrical certification for workshop use.

Can I use the ammunition loaded with this neck sizing die in multiple different .250 Savage rifles?

No. The Redding 81122 sizes only the neck of the brass to match the exact fire-formed dimensions of a specific rifle chamber, meaning cases must be returned to and fired from the exact same rifle. If you attempt to swap neck-sized brass between different firearms of the same calibre, you are likely to experience chambering failures.

What shellholder do I need to purchase alongside the Redding 81122 die for my reloading bench?

The die requires a Redding #1 Standard Shellholder (Part #11001) or Competition Shellholder (#11601), which is sold separately. It also includes the necessary decapping rod assembly, decapping pin, and expander size button for simultaneous priming removal and neck tension adjustment.

At what point should I transition from this neck sizing die to a full-length sizing die?

If you notice your .250 Savage cases beginning to experience stiff chamber closure after multiple firings, or if you plan to shoot the ammunition in a semi-automatic, pump, or lever-action rifle, you must transition to a full-length sizing die. Neck sizing is strictly recommended for dedicated bolt-action rifles where fire-formed brass dimensions can be safely maintained.

Neck Sizing Die - Redding 81122

The Redding 81122 Precision Neck Sizing Die is a dedicated reloading die designed for .250 Savage (.250-3000 Savage) bottleneck cartridge cases. Manufactured from heat-treated alloy steel with hand-polished interior surfaces, this die resizes only the case neck while leaving the fire-formed body and shoulder unchanged. By retaining the exact dimensions of your rifle's chamber, it minimises case runout and prevents the premature work-hardening, stretching, and case-head separation associated with repeated full-length sizing. It fits reloading presses utilizing standard 7/8"-14 threads and requires a Redding #1 standard or competition shellholder (sold separately).

Key Features

Neck-Only Resizing: Sizes the case neck to suit 0.257" diameter bullets while preserving the fire-formed cartridge body and shoulder alignment.
Extended Brass Life: Eliminates continuous overworking of the brass at the shoulder and case web, substantially extending case longevity.
Simultaneous Decapping and Expanding: Integrates a decapping pin (#01060), decapping rod (#01033), and expander button (#39256) to unseat spent primers and uniform neck inner diameters in a single stroke.
Precision Construction: Heat-treated alloy steel construction with polished internal cavities ensures smooth extraction and dimensional uniformity.

Product Specifications

Brand: Redding Reloading Equipment
Model / MPN: 81122
Calibre Compatibility: .250 Savage (.250-3000 Savage)
Compatible Bullet Diameter: 0.257"
Thread Standard: 7/8"-14 thread
Required Shellholder: Redding #1 Shellholder (#11001) / Competition Shellholder (#11601)
Included Components: Decapping rod assembly (#33256), decapping rod (#01033), decapping pin (#01060), expander size button (#39256), and standard lock ring (#01016)
Weight: Approximately 0.25–0.35 kg

Who is the Redding 81122 Neck Sizing Die for?

Precision Bolt-Action Handloaders — who require minimal bullet runout and maximum concentricity for 0.257" diameter projectiles, mounting this neck sizing die in standard 7/8"-14 threaded presses to process cases dedicated to a single bolt-action chamber.
High-Volume Brass Preservers — who want to extend the working life of their .250 Savage brass by eliminating body and shoulder resizing, using the neck sizing die to size only the neck for 0.257" bullets and avoid premature case-head separation.

Less suitable for: Firearm platforms requiring complete dimensional resizing, such as semi-automatic, pump, or lever-action rifles, or ammunition intended to be shared across multiple different rifles of the same calibre. When cases begin experiencing stiff chamber closure after multiple firings, reloaders must transition to a full-length sizing die or a dedicated body die to bump the shoulder back by 0.001" to 0.002".

SKU	RD102358LP
Model #	81122
Brand	Redding
Shipping Weight	0.2000kg

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Redding 81122 Neck Sizing Die 250 Savage Precision Tool

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