Will the Hornady 00-7 Large Primer Cup (Part #390006) fit my modern Hornady Lock-N-Load Classic single-stage press?

Yes, this OEM replacement part is specifically designed to fit the on-press priming arm assemblies of vintage Hornady 00-7 presses as well as modern Hornady Lock-N-Load Classic and Iron single-stage presses. It pairs directly with your press's large primer seating punch and internal primer cup return spring.

Can I use this large primer cup to seat small primers if I am careful during the reloading process?

No, you should never use Part #390006 for small primers. With an interior dimension of 0.218 inches stepping down to 0.163 inches, it is built exclusively for large boxer primers and attempting to seat small primers will cause dangerous misalignment, tipped or crushed primers, and a risk of detonation. Small primers require the dedicated Hornady Part #390005 small primer cup.

Does this mechanical reloading component require any Australian electrical safety certifications like SAA or RCM?

No, the Hornady Large Primer Cup is a strictly mechanical, non-powered reloading accessory requiring no electrical power or plugs. Therefore, it is completely exempt from Australian electrical safety approvals such as SAA or RCM compliance and is legally classified as an unregulated reloading accessory across all Australian states and territories.

Large Primer Cup - Hornady 390006

The Hornady 00-7 Large Primer Cup (MPN: 390006) is an OEM replacement component designed to guide, hold, and align large primers squarely under the cartridge case head during single-stage reloading operations. Engineered for on-press priming arm assemblies, it secures standard Large Rifle, Large Pistol, and Magnum primers to prevent damaged anvils and uneven seating depths. Operating purely as a manual mechanical accessory, it requires no electrical power or Australian regulatory safety approvals (such as RCM or SAA) and functions as a standard, bench-mounted reloading press component.

Key Features

OEM Fit and Alignment: Designed to mount directly into the on-press priming arm assemblies of the Hornady 00-7, Lock-N-Load Classic, and Iron single-stage presses alongside a large primer seating punch and internal return spring.
Machined Steel Construction: Durable steel profile weighing under 10 grams, maintaining alignment through repeated manual press strokes.
Precise Stepped Bore: Features a stepped internal diameter profile designed specifically to mate with the primer punch base while securely holding large primers.
Calibre Conversion Support: Enables immediate conversion of single-stage press priming arms from small primer setups to standard large-primer ammunition calibres.

Specifications

Manufacturer Part Number (MPN): 390006
Category: Reloading press primer cup
Primer-Receiving Interior Diameter: 0.218 inches (approx. 5.54 mm)
Seating-Punch Interface Interior Diameter: 0.163 inches (approx. 4.14 mm)
Exterior Dimensions: Approximately 0.25″ × 0.25″ × 0.25″ (approx. 6.35 mm × 6.35 mm × 6.35 mm)
Weight: Under 10 grams
Primer Capacity: 1 primer at a time
Primer Compatibility: Large boxer primers with a nominal diameter of approximately 0.210 inches (5.33 mm)
Press Compatibility: Hornady 00-7, Lock-N-Load Classic, and Lock-N-Load Iron single-stage presses
Power Requirements: None (manual mechanical component)

Who is the Hornady 00-7 Large Primer Cup for?

Reloaders converting a Hornady single-stage press from small to large priming: Requires the 0.218-inch interior diameter at the primer-receiving end to properly seat large primers (nominal 0.210-inch diameter) without the crushing or tilting that occurs when using incorrect priming arm hardware.
Reloaders replacing worn, peened, or lost priming components: Restores factory seating alignment using an OEM steel reloading press primer cup weighing under 10 grams with an exact 0.163-inch seating-punch interface bore.

Less suitable for: Seating small primers with a nominal diameter of approximately 0.175 inches (which leads to severe misalignment and requires a dedicated small primer cup such as Part #390005), or for high-volume batch loading beyond its 1-primer capacity limit, where dedicated hand-priming tools or progressive reloading presses are better suited.

SKU	HN42879LP
Model #	390006
Brand	Hornady
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

Hornady 390005 Small Primer Cup Steel Seating Slee

$11.95

Hornady 390034 Primer Punch Small Steel Replacemen

$4.95

Hornady 390035 Large Primer Punch Reloading Tool S

$4.95

Lee Precision Ram Prime 90106 Reloading Tool

$43.95

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.

Hornady 390006 00-7 Large Primer Cup Replacement Part

Secure Payment Methods