What dies are compatible with the Redding 73337 steel neck sizing bushing?

The Redding 73337 bushing features standard external dimensions of 1/2-inch outer diameter by 3/8-inch height. It is fully compatible with all Redding Type S Bushing Full Length and Neck Sizing Dies, Competition Neck Sizing Dies, and standard Wilson-style neck bushing dies.

Do I need to use case neck lubrication with this heat-treated steel bushing?

Yes, standard heat-treated steel bushings require external case neck lubrication, such as sizing wax or spray lube, prior to sizing to ensure smooth operation and prevent brass scuffing. If you prefer sizing without lubrication, you would instead want to look at Redding's Titanium Nitride coated bushing alternatives.

How do I determine if the 0.337-inch sizing diameter is correct for my specific brass?

Proper bushing selection relies on measuring the outside neck diameter of a loaded cartridge with your specific brass brand and bullet, then subtracting 0.001 to 0.002 inches. This 0.337-inch size is typically selected when your finished loaded neck diameter falls around 0.338 to 0.339 inches.

Are there any electrical compliance or SAA/RCM approvals required for use in Australia?

No electrical certifications or SAA/RCM approvals are needed for this product. The Redding 73337 is a completely unpowered, hand-operated mechanical reloading tool that can be freely imported and used on reloading benches across Australia.

Neck Sizing Bushing - Redding 73337

The Redding .337 Heat-Treated Steel Neck Sizing Bushing (MPN: 73337) is a precision reloading component designed to regulate case neck tension with minimal brass fatigue. By sizing cartridge case necks down to an exact 0.337-inch nominal inside diameter, it eliminates the need to overwork brass or rely on standard expander buttons, reducing concentricity runout and extending case life. It is standardly sized to fit all Redding Type S Bushing Full Length and Neck Sizing Dies, Redding Competition Neck Sizing Dies, and standard Wilson-style neck bushing dies, commonly serving .30-calibre cartridges such as .308 Winchester, .30-06 Springfield, and .300 Winchester Magnum.

Key Features

Precise Neck Tension Control: Applies a precise 0.337-inch nominal sizing diameter to case necks to establish consistent bullet grip and uniform velocity.
Wear-Resistant Hardened Construction: Manufactured from heat-treated steel hardened to approximately Rockwell C 60–62 (Rc 60–62) for long-term dimensional stability.
Hand-Polished Interior: Minimises friction during case neck entry and withdrawal to preserve concentricity and prevent brass galling when used with proper case neck lubrication.
Standardised External Dimensions: Built to industry-standard 1/2-inch (12.7 mm) outer diameter and 3/8-inch (9.53 mm) height specifications for broad compatibility across bushing die platforms.

Specifications

Product Type: Steel neck sizing bushing
Model / MPN: 73337
Inside Sizing Diameter: 0.337 inches
External Dimensions: 1/2 in (0.500 in / 12.7 mm) outer diameter x 3/8 in (0.375 in / 9.53 mm) height
Material & Hardness: Heat-treated steel, Rockwell C 60–62 (Rc 60–62)
Die Compatibility: Redding Type S Full Length and Neck Sizing Dies, Competition Neck Sizing Dies, Wilson-style bushing dies
Lubrication Requirement: External neck lubricant required

Who is the Redding .337 Heat-Treated Steel Neck Sizing Bushing for?

Benchrest and F-Class precision reloaders — requiring exact tension management via an inside sizing diameter of 0.337 inches to minimise velocity spread without overworking brass necks.
PRS and long-range hunting reloaders — seeking durable heat-treated steel hardened to Rockwell C 60–62 to maintain concentric neck alignment across high-volume cartridge preparation in standard 1/2-inch outer diameter dies.

Less suitable for: Reloaders who require dry sizing without case lubrication, who should select a Titanium Nitride (TiN) coated bushing; cases with neck-wall thickness variations exceeding 0.002 inches, which require neck-turning tools or an expander mandrel; or loaded cartridge dimensions outside 0.338 inches to 0.339 inches, which require a different nominal bushing diameter.

SKU	RD41779LP
Model #	73337
Brand	Redding
Shipping Weight	1.0000kg

What our Customers are Saying

We Also Recommend

Lee Breech Lock Challenger Kit Iii - With Auto Be

$414.95

Pro-shot 1ps-38-17 Stainless Steel Rifle Cleaning

$122.95

Kleenbore Cp16b Cotton Cleaning Patches 1.25 Inch

$32.95

Recommended Products

Redding 49356 Carbide Size Button Kit .35 Calibre

$99.95

Redding 96020 G-rx Large 32 Oz High Density Polyet

$22.95

Rcbs R9803 Expander Decapping Unit 226 Calibre Ste

$37.95

Redding 74415 Small Base Body Die For 6.5mm 284 Wi

$127.95

Welcome to Xhunter Australia. By accessing and using our website (www.xhunter.com.au) and purchasing from our online store, you agree to be bound by the following Terms and Conditions. Please read them carefully before proceeding.

1. Eligibility

By agreeing to these Terms and Conditions, you confirm that:

• You are at least 18 years of age.
• You are legally capable of entering into a binding contract under Australian law.
• You will not purchase any restricted or controlled items unless legally permitted to do so.

2. Product Information

• All products listed are subject to availability.
• Product descriptions, specifications, and pricing are subject to change without notice.
• We make every effort to display products accurately, although we do not guarantee that all images or content are error-free.

3. Orders and Payments

• All orders are subject to acceptance and confirmation.
• Prices are in AUD and include GST unless otherwise stated.
• We reserve the right to cancel or refuse any order at our sole discretion.
• Full payment is required before dispatch.

4. Authority to Leave (ATL) and Delivery

• By default, all orders are shipped with Authority to Leave (ATL).
• If you require Signature on Delivery, please contact us prior to purchasing. Additional charges apply.
• If an order is returned to us due to failed delivery or non-receipt when ATL is not permitted, a $25 return processing fee must be paid before reshipment or refund.

5. Returns and Refunds

• Please refer to our full Returns Policy on the website.
• Returned items must be in original, resalable condition unless faulty.
• A restocking fee may apply if an item is not in reselling condition.
• Change-of-mind returns may not be accepted for clearance or custom-ordered items.

6. Firearms and Restricted Items

• You must comply with all relevant State and Federal laws for regulated products.
• You are responsible for ensuring proper licences and permits are held.
• We reserve the right to request proof of eligibility before dispatch.

7. Limitation of Liability

• Xhunter Australia is not liable for direct or indirect losses arising from the use or misuse of products.
• We are not responsible for any unauthorised modifications or incorrect application of products.

8. Manufacturer Warranty Support

Some products sold by Xhunter Australia include a manufacturer’s warranty (for example, limited lifetime warranties). These warranties are provided solely by the manufacturer and are separate from the consumer guarantees under Australian Consumer Law.

Where a manufacturer provides a warranty:

A. The warranty is offered and honoured by the manufacturer, not by Xhunter Australia, unless expressly stated otherwise.
B. Customers may be required to contact the manufacturer directly and comply with their warranty process, which may include overseas product assessment.
C. Proof of purchase is required to lodge a manufacturer warranty claim.
D. Assistance provided by Xhunter Australia in lodging warranty claims is a goodwill service only and does not imply liability for warranty outcomes or decisions.

Nothing in this clause limits your rights under Australian Consumer Law.
Xhunter Australia remains responsible for providing legally required remedies for products that fail to meet the consumer guarantees of acceptable quality, fitness for purpose, and reasonable durability.

9. Privacy

Your personal information is collected, used, and stored in accordance with our Privacy Policy.

10. Intellectual Property

All text, graphics, logos, and images on this website remain the property of Xhunter Australia and are protected by copyright laws.

11. Amendments

We may update or modify these Terms and Conditions at any time without prior notice. Continued use of our site constitutes acceptance of any updated Terms.

12. Governing Law

These Terms and Conditions are governed by the laws of Victoria, Australia. Any disputes will be handled exclusively by the courts of Victoria.

13. 18+ Age Requirement

By placing an order, you confirm that you are at least 18 years of age and legally entitled to purchase the products ordered. We may cancel any order that breaches this requirement.

Redding 73337 Steel Neck Sizing Bushing 0.337 Inch

Secure Payment Methods