What specific dies and cartridges are compatible with the Redding 98225 Carbide Kit?

This kit is exclusively designed for .257 caliber bottleneck rifle cartridges used with Redding Competition Bushing Neck Sizing Dies, such as the .257 Roberts and .257 Roberts Ackley Improved. It is not compatible with standard dies, Redding Type-S dies, or other .25-caliber case lengths like the .25-06 Rem or .257 Weatherby Mag, which require different rod lengths.

Does the Redding 98225 require internal case neck lubrication during the sizing process?

No, the primary benefit of this kit is its polished tungsten carbide expander button. The free-floating design allows for smooth, lube-free inside-neck sizing, eliminating the mess and residue of internal case neck lubricants in your reloading process.

How does the free-floating carbide size button improve reloading precision?

The tungsten carbide button automatically self-centers within the case neck to ensure optimal alignment and concentricity. This dynamic self-alignment minimizes case runout and neck tension inconsistency, which helps improve overall accuracy and extends brass life.

What components are included in the Redding 98225 kit box?

The kit contains one .257 caliber tungsten carbide size button, a dedicated decapping rod assembly or spindle, a retainer, and a spare decapping pin. It provides everything needed to upgrade your compatible Redding Competition Bushing Neck Sizing Die assembly.

Does this mechanical reloading kit require any electrical certifications for use in Australia?

No, the Redding 98225 is a purely mechanical reloading tool accessory and does not require electrical power, 240V compatibility, or SAA/RCM regulatory certification. It is fully compliant for import and use by Australian handloaders in any standard indoor reloading setup.

Carbide Size Button Kit - Redding 98225

The Redding Competition Bushing Die Carbide Size Button Kit for .257 Caliber (Model 98225) is an internal upgrade designed for Redding Competition Bushing Neck Sizing Dies. It replaces the standard steel expander assembly with a polished tungsten carbide expander button that sizes the inside neck of .257 calibre / 25 Caliber bottleneck rifle cases without requiring inside-neck lubrication. The carbide button uses a self-centering, free-floating design that aligns dynamically with the case neck axis to reduce neck runout and maintain uniform neck tension.

Key Features

Polished Tungsten Carbide Button: Expands .257 calibre case necks smoothly without internal case neck lubricants, eliminating powder contamination from residual oils.
Free-Floating Decapping Assembly: Automatically self-centres inside the case neck to minimise brass distortion and runout during the sizing stroke.
Complete Replacement Assembly: Includes one .257 calibre tungsten carbide size button, a dedicated decapping rod spindle, a retainer, and spare decapping pins.
Purely Mechanical Operation: Requires no electrical connections or external power sources for installation into compatible Redding dies.

Specifications

Manufacturer Part Number: 98225
Calibre Compatibility: .257 calibre / 25 Caliber (specifically matched to .257 Roberts and .257 Roberts Ackley Improved 40° cartridge lengths)
Die Compatibility: Exclusively fits Redding Competition Bushing Neck Sizing Dies
Expander Material: Polished Tungsten Carbide
Operating Environment: Standard indoor reloading bench conditions

Who is the Redding Competition Bushing Die Carbide Kit for .257 Caliber for?

Precision handloaders reloading .257 Roberts and .257 Roberts Ackley Improved cartridges — sizes .257 calibre bottleneck cases using a polished carbide expander button kit that eliminates internal neck lubrication while preserving brass life.
Benchrest and precision rifle competitors — reduces runout on .257 calibre brass through a free-floating carbide sizing button assembly designed to self-align along the cartridge neck axis.

Less suitable for: Reloaders using standard Redding dies or Redding Type-S Bushing dies (which require standard expander button kits like Part #48256), or those loading different .25-calibre case lengths such as the .25-06 Remington, .257 Weatherby Magnum, or .25 WSSM, which require calibre-specific assemblies with alternate decapping rod lengths.

SKU	RD102420LP
Model #	98225
Brand	Redding
Shipping Weight	0.2000kg

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Redding 98225 Competition Carbide Size Button Kit 257 Cal

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