What specific .22-calibre cartridges are compatible with the Redding 39223 size button?

The Redding 39223 size button features a .223-inch expander diameter tailored for .224-inch bullet seating. It fits standard Redding bottleneck sizing dies for popular calibres including .22 Hornet, .218 Bee, .222 Remington, .223 Remington, .22-250 Remington, .220 Swift, and .22 Nosler.

Is this standard steel alloy expander button compatible with Redding Competition Bushing Dies?

No, the Redding 39223 is not compatible with Redding Competition Bushing Dies because those specialized dies do not use an internal expander rod. It is specifically designed to fit standard Redding Full-Length Sizing Dies, Neck Sizing Dies, and Type S Bushing Sizing Dies.

Do I need to apply lubrication when using this standard steel size button during the reloading stroke?

Yes, inside-neck lubrication using dry graphite, mica, or standard sizing lube is strictly required during the sizing stroke with this steel alloy button. Operating the button without inside-neck lubrication can cause excessive drag, increased friction, and unwanted brass neck stretch.

How should I maintain the Redding 39223 size button to prevent corrosion in humid Australian workshop environments?

As a precision-machined, heat-treated alloy steel component, it should be kept lightly oiled when stored for extended periods to protect against surface rust. Regular inspection and cleaning will also ensure it continues to produce consistent neck tension without scoring your brass case necks.

Redding Size Button - Redding 39223

The Redding Standard Replacement Steel Size Button (.22 Calibre, MPN: 39223) is a precision-machined, heat-treated alloy steel component designed for Redding bottleneck reloading dies. It threads directly onto the factory decapping spindle assembly to expand the inside diameter of resized or fire-formed brass case necks, ensuring uniform internal dimensions and consistent neck tension when seating standard .224" projectiles. It serves as an exact OEM replacement for worn, scored, or damaged expander buttons across standard Full-Length Sizing Dies, Neck Sizing Dies, and Type S Bushing Sizing Dies.

Key Features

Precision Internal Neck Expansion: Expands cartridge case necks to provide uniform neck tension across a wide range of .22-calibre centrefire cartridges, including .22 Hornet, .218 Bee, .221 Remington Fireball, .222 Remington, .223 Remington / 5.56x45mm, .224 Valkyrie, .22-250 Remington, .220 Swift, and .22 Nosler.
Durable Heat-Treated Alloy Steel: Machined and hand-finished from alloy steel to maintain precise sizing tolerances across repeated reloading cycles.
Direct OEM Compatibility: Engineered to match the factory decapping spindle thread specifications on standard Redding sizing dies.

Product Specifications

Manufacturer Part Number (MPN): 39223
Calibre Suitability: .22 Calibre
Nominal Expander Diameter: .223 inch (for seating .224" bullets)
Material: Heat-treated alloy steel
Packaged Shipping Weight: 0.10 lbs (~45 g)
Die Compatibility: Redding Full-Length Sizing Dies, Neck Sizing Dies, and Type S Bushing Sizing Dies

Who is the Redding Size Button 22 Hornet, 218 Bee, 223 Rem for?

Handloaders and bench reloaders processing .22-calibre centrefire rifle cartridges — maintains uniform case neck tension by utilizing a precision .223 inch expander diameter to correctly prepare brass necks for standard .224" projectile seating.
Varmint hunters and target shooters maintaining Redding bottleneck sizing die sets — replaces worn or scored factory expander components in compatible sizing dies with a standard replacement size button weighing approximately 0.10 lbs in its packaged format.

Less suitable for: Handloaders running non-lubricated sizing strokes or using Redding Competition Bushing Dies (which do not utilise an expander spindle); reloaders processing dry cases without inside-neck lubricant should use a free-floating carbide size button kit or bushing-only die systems to prevent excessive neck stretch.

SKU	RD41638LP
Model #	39223
Brand	Redding
Shipping Weight	1.0000kg

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Redding 39223 Steel Size Button 22 Calibre 224 Inch

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