What specific neck tension does the Redding 21523 mandrel provide for 6.5mm bullets?

The Redding 0.2625 expanding mandrel is precision-ground to a diameter of 0.2625 inches. This provides approximately 0.0015 inches of neck tension below the nominal 0.264 inch bullet diameter, ensuring consistent bullet release for precision 6.5mm reloading.

What equipment is required to use the Redding 0.2625 Expanding Mandrel in my reloading setup?

This mandrel is engineered with a proprietary fit for use inside the Redding Precision Expanding Die Body, which is sold separately. For optimal operation and smooth case neck expansion, it pairs exceptionally well with Redding Imperial Sizing Die Wax Case Lube.

Do I need any special firearm licenses or electrical compliance certifications to purchase this mandrel in Australia?

No special firearms licenses are required to purchase reloading tool accessories like this mandrel in Australia. Furthermore, because it is a non-powered, solid steel mechanical tool, electrical compliance ratings such as 240V compatibility and SAA or RCM certifications do not apply.

What are the pre-condition requirements for brass before using the Redding 21523 mandrel?

Before running your brass over this mandrel, the internal neck diameter must be smaller than 0.2625 inches. Fired brass should be properly resized using a sizing die without an expander ball or with an undersized bushing to ensure the mandrel can effectively expand the neck from the inside out.

6.5mm Expanding Mandrel - Redding 21523

The Redding 0.2625 Expanding Mandrel (MPN: 21523) is a precision reloading tool accessory engineered to set consistent internal case neck diameter from the inside out. CNC-machined from hardened tool steel and ground to final dimension, it expands case necks to an exact 0.2625 in (6.6675 mm) diameter. Designed for use in the Redding Precision Expanding Die Body, this mandrel establishes approximately 0.0015 in of neck tension on standard .264 Caliber / 6.5mm projectiles, improving bullet release consistency and reducing muzzle velocity standard deviations.

Key Features

Targeted Neck Tension: Sizes internal neck diameter to exactly 0.2625 in, creating 0.0015 in of neck tension under nominal 0.264 in bullet diameter for consistent seating and release forces.
Concentric Alignment: Designed with angled alignment surfaces that interface with the Redding Expanding Die body to self-centre and eliminate runout during the expansion stroke.
Tool Steel Construction: Precision-machined from high-grade, heat-treated tool steel with size markings permanently stamped on the head for quick identification.
Inside-Out Expansion: Pushes brass imperfections to the exterior of the case neck, yielding a uniform internal surface finish and consistent bullet grip.

Specifications

Product Type: Reloading neck expander mandrel
Manufacturer Part Number (MPN): 21523
Mandrel Diameter: 0.2625 in (6.6675 mm)
Calibre Compatibility: .264 Caliber / 6.5mm (including 6.5 Creedmoor, 6.5 PRC, 6.5x55 Swedish, and .260 Remington)
Neck Tension Produced: Approximately 0.0015 in below nominal 0.264 in bullet diameter
Material: Heat-treated, precision-ground tool steel
Die Interface: Redding Precision Expanding Die Body
Operation: Non-powered, mechanical reloading accessory

Who is the Redding 0.2625 Expanding Mandrel for?

Precision rifle competitors — Sizes 6.5mm cartridge necks to an internal diameter of 0.2625 in to maintain uniform 0.0015 in neck tension across match-grade handloads.
Benchrest shooters — Employs a precision-ground 0.2625 in expander mandrel to minimise runout and reduce standard deviations in muzzle velocity across .264 caliber cases.
Handloaders prepping new brass — Expands dented or undersized case necks on fresh .264 caliber / 6.5mm brass to a uniform 0.2625 in internal profile prior to initial bullet seating.

Less suitable for: Handloaders working with calibres other than .264 / 6.5mm, or cases where the internal neck diameter is already 0.2625 in or larger; handloaders loading alternative diameters or requiring different tension profiles require calibre-specific mandrels sized to their target tension specifications.

SKU	RD41484LP
Model #	21523
Brand	Redding
Shipping Weight	1.0000kg

What our Customers are Saying

We Also Recommend

Sellier & Bellot 300 Winchester Magnum Unprimed Br

$57.95

Kleenbore Cp16b Cotton Cleaning Patches 1.25 Inch

$32.95

Recommended Products

Redding 21527 Precision Expanding Die 6.5mm 0.2630

$169.95

Redding 21541 Precision Expanding Die 7mm 0.2830 M

$169.95

Redding 21544 Expanding Mandrel 308 Cal 03065 Tool

$80.95

Redding 21545 Expanding Mandrel 30 Caliber 0.3060

$80.95

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 21523 Expanding Mandrel 0.2625 In 6.5mm Reloading Tool

Secure Payment Methods