What dies are compatible with the Redding .366 Heat-Treated Steel Neck Sizing Bushing?

This bushing features standard dimensions of 1/2-inch outer diameter and 3/8-inch length, allowing it to freely interchange across all Redding bushing-style dies including Type S Full Length, Type S Neck Sizing, and Competition Bushing Neck Sizing dies. It is also compatible with standard 1/2-inch bushing-accepting sizing dies from select other manufacturers such as Wilson, Forster, or RCBS.

Do I need to use case neck lubrication with this standard steel bushing?

Yes, because this model is made from precision heat-treated carbon steel, it requires case neck lubrication prior to sizing to prevent brass from sticking or galling. If you prefer to size your brass without traditional case neck lube, you might want to look into alternative options like Redding's Titanium Nitride coated bushings.

Are there any firearms licensing or electrical compliance requirements for importing this into Australia?

No firearms licensing barriers apply to this product, as it is a purely mechanical reloading tooling accessory rather than a regulated firearm part. Furthermore, because it contains no electronics, electrical compliance certifications such as 240V compatibility and SAA or RCM approvals are not applicable for use in your Australian reloading workshop.

Neck Sizing Bushing - Redding 73366

The Redding .366 Heat-Treated Steel Neck Sizing Bushing (MPN: 73366) is a precision reloading component designed to control case neck tension without overworking cartridge brass. Manufactured from hardened, heat-treated carbon steel with a hand-polished interior, it sizes cartridge necks to an exact inside diameter while maintaining concentricity and minimising runout. Measuring a standard 1/2-inch outer diameter by 3/8-inch in length, this bushing interchanges freely across Redding Type S and Competition bushing sizing dies as well as other standard 1/2-inch bushing-compatible reloading dies.

Key Features

Precise Neck Tension Control: Sizes the case neck to a specific 0.366-inch inside diameter, eliminating the need for an expander ball pulling through the case mouth and extending brass life.
Heat-Treated Steel Construction: Made from hardened steel that is polished to a smooth finish to prevent brass galling during the sizing stroke.
Universal Die Interface: Features standard 1/2-inch outer diameter and 3/8-inch length dimensions for cross-compatibility across all Redding bushing-style dies and compatible aftermarket dies.
Permanent Size Stamping: Marked with the specific inside diameter size identification for clear tracking in your reloading setup.

Specifications

Manufacturer Part Number (MPN): 73366
Material: Precision heat-treated steel
Inside Diameter (Sizing Diameter): 0.366 inches (hand-polished)
External Dimensions: 1/2-inch Outer Diameter (O.D.) × 3/8-inch Length (12.7 mm × 9.5 mm)
Weight: Approximately 14–20 g
Power Requirements: None (manual mechanical tool)
Die Compatibility: Redding Type S Bushing Full Length Dies, Redding Type S Bushing Neck Sizing Dies, Redding Competition Bushing Neck Sizing Dies, and standard 1/2-inch bushing dies (select Wilson, Forster, or RCBS models)

Who is the Redding .366 Heat-Treated Steel Neck Sizing Bushing for?

Precision rifle reloaders using large-calibre setups — Needs a steel neck sizing bushing with a precise 0.366-inch inside diameter to achieve calculated neck tension on large-calibre brass (such as select .338 Lapua Magnum or .338 Norma Magnum cases) without introducing neck runout.
Handloaders utilizing Redding Type S or Competition bushing-style dies — Requires a standard 1/2-inch outer diameter by 3/8-inch length steel neck sizing bushing that drops directly into existing Type S and Competition die bodies to fine-tune neck sizing.

Less suitable for: Handloaders who want to size cartridge necks without applying traditional case neck lubrication; standard heat-treated steel requires wet lubrication to prevent sticking, making a Titanium Nitride (TiN) coated bushing or carbide neck sizing bushing better suited for lube-free sizing.

SKU	RD41784LP
Model #	73366
Brand	Redding
Shipping Weight	1.0000kg

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Redding 73366 Steel Neck Sizing Bushing .366 Inch

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