My Account (Sign in)
Your basket is empty.
0
Basket
contact us by phone Help and contact
Free standard delivery over £199
100-day return policy
My Account (Sign in)
Wish list
Your basket is empty. (0)
Basket
Newsletter Newsletter
Sale

Over 300,000 customers - we say thank you!

4.93/5 "Very good" (1400+ reviews)

40,000+ products for hunting and shooting sports

Reloading Reloading Dies Rifle Dies L.E. WILSON 7MM CALIBER (0.283) DIE W/EXPANDING MANDREL Support

Ensure consistent neck diameter and seating depth with the L.E. Wilson Expanding Mandrel Die for 7mm caliber, featuring durable stainless parts and interchangeable mandrels.
-5 %

L.E. WILSON 7MM CALIBER (0.283) DIE W/EXPANDING MANDREL

815145028471 749018899

Filters:

Variations
Filters:
Diameter (in)
0.223
0.242
0.263
0.283
0.3075
0.337
Variations:

Variations:

-5 %
Ensure consistent neck diameter and seating depth with the L.E. Wilson Expanding Mandrel Die for 7mm caliber, featuring durable stainless parts and interchangeable mandrels.
EXPANDING MANDREL DIES - 7MM CALIBER (0.283) DIE W/EXPANDING MANDREL
89.9 GBP 1 £89.90 * £94.90
In stock
Cartridge: 7 mm Diameter (in): 0.283 Die Style: Expander Die Product no.: 749018899
In stock
89.9 GBP 1 £89.90 * £94.90
-5 %
The L.E. Wilson Expanding Mandrel Die ensures consistent neck diameter for new brass cases, improving seating depth with durable stainless parts and interchangeable mandrels.
EXPANDING MANDREL DIES - 22 CALIBER (0.223) DIE W/EXPANDING MANDREL
89.9 GBP 3 £89.90 * £94.90
In stock
Cartridge: 22 Caliber (.223-.224) Diameter (in): 0.223 Die Style: Expander Die Product no.: 749018894
In stock
89.9 GBP 3 £89.90 * £94.90
-5 %
The L.E. Wilson Expanding Mandrel Die ensures consistent neck diameter on new brass cases, enhancing seating depth with durable stainless parts and interchangeable mandrels.
EXPANDING MANDREL DIES - 33 CALIBER (0.337) DIE W/EXPANDING MANDREL
89.9 GBP 1 £89.90 * £94.90
In stock
Diameter (in): 0.337 Die Style: Expander Die Product no.: 749018896
In stock
89.9 GBP 1 £89.90 * £94.90
-5 %
The L.E. Wilson Expanding Mandrel Die ensures consistent neck diameter for new brass cases, enhancing seating depth and accuracy with durable stainless parts.
EXPANDING MANDREL DIES - 6MM CALIBER (0.242) DIE W/EXPANDING MANDREL
89.9 GBP 1 £89.90 * £94.90
In stock
Diameter (in): 0.242 Die Style: Expander Die Product no.: 749018897
In stock
89.9 GBP 1 £89.90 * £94.90
The L.E. Wilson Expanding Mandrel Die ensures consistent neck diameter and seating depth for new brass cases, featuring stainless parts and interchangeable mandrels.
EXPANDING MANDREL DIES - 30 CALIBER (0.3075) DIE W/EXPANDING MANDREL
94.9 GBP 0 £94.90 *
Backorderable
Cartridge: 30 Caliber (.308) Diameter (in): 0.3075 Die Style: Expander Die Product no.: 749018895
Backorderable
94.9 GBP 0 £94.90 *
The L.E. Wilson Expanding Mandrel Die ensures consistent neck diameter and tension for new brass cases, enhancing seating depth and accuracy.
EXPANDING MANDREL DIES - 6.5MM CALIBER (0.263) DIE W/EXPANDING MANDREL
94.9 GBP 0 £94.90 *
Backorderable
Diameter (in): 0.263 Die Style: Expander Die Product no.: 749018898
Backorderable
94.9 GBP 0 £94.90 *
89.9 94.9 6 GBP
-5 %
MSRP £94.90
89.9 GBP £89.90

Prices inclusive of duty & VAT.

Product no.: 749018899

Mfr. No.: EXP-7MD

815145028471 The Wilson Expanding Mandrel Sizing Die. These dies are designed to be used on NEW brass cases to prepare the case for the seating operation. Over the past few years we have seen a greater need to run new brass cases over an expanding mandrel to properly prepare them for their first firing. New brass cases are often damaged when shipped in bulk, this die will give you a consistent neck diameter on your cases. With correct neck tension you can expect a more consistent seating depth. Includes one mandrel. Additional mandrels sold separately. Cut out in die provides an easy view for making sure case aligns and setting up depth Interchangeable Mandrels depending on caliber Standard 7/8ths Reloading Press Die ONLY expands neck to slightly under bullet diameter Stainless Parts for a Long Lasting Finish Durable and Accurate L.E. Wilson manufactured lock nut - thickness is .225" from inside to outermost edge .270" for height and 1.250" total width OD
In stock 1 pcs. in the USA warehouse
Be the first to rate this product
1
2
3
4
5
6
7
8
9
10+
-5 %
MSRP £94.90
£89.90

Prices inclusive of duty & VAT.

1
2
3
4
5
6
7
8
9
10+

Delivery time approx. 7-14 days.

100-Day Return Policy

Delivery time approx. 7-14 days.

100-Day Return Policy
No charges until we ship
No charge:
Your credit card will not be charged when you place your order.

No commitments:
You are under no obligation until the goods are shipped. You can cancel your order at any time before shipping - free of charge.

Not until shipping:
Your credit card will only be charged once we ship your order. Not before.
  • Consistent neck diameter
  • Durable stainless parts
  • Interchangeable mandrels
Wish List Ask question
89.9 94.9 6 GBP
Description Specification Customers reviews Accessories

L.E. WILSON 7MM CALIBER (0.283) DIE W/EXPANDING MANDREL

-5 %
MSRP £94.90
89.9 GBP £89.90

Prices inclusive of duty & VAT.

1
2
3
4
5
6
7
8
9
10+
-5 %
MSRP £94.90
£89.90

Prices inclusive of duty & VAT.

1
2
3
4
5
6
7
8
9
10+

Delivery time approx. 7-14 days.

100-Day Return Policy

Description:

The Wilson Expanding Mandrel Sizing Die is a must-have for precision reloading!

The L.E. Wilson 7mm Caliber (0.283) Die with Expanding Mandrel is expertly designed for use on new brass cases, ensuring they are properly prepared for the seating operation. Over recent years, the demand for running new brass cases over an expanding mandrel has increased significantly to optimize them for their first firing.

New brass cases can often sustain damage during bulk shipping, but this die guarantees a consistent neck diameter on your cases. With the correct neck tension, you can anticipate a more uniform seating depth.

Key Features:

  • Includes one mandrel; additional mandrels are available separately.
  • Cut-out in die allows for easy alignment and depth setup.
  • Interchangeable mandrels based on caliber.
  • Compatible with standard 7/8ths reloading presses.
  • Die expands neck to slightly under bullet diameter.
  • Constructed with stainless parts for a long-lasting finish.
  • Durable and accurate L.E. Wilson manufactured lock nut, with a thickness of .225" from inside to outermost edge, .270" for height, and a total width OD of 1.250".

Elevate your reloading precision with the L.E. Wilson Expanding Mandrel Sizing Die, ensuring that your brass cases are perfectly prepared for optimal performance.



Attributes

  • Cartridge: 
    7 mm
  • Diameter (in): 
    0.283
  • Die Style: 
    Expander Die
  • Delivery weight: 0.222kg
  • Shipping height: 38mm
  • Shipping width: 51mm
  • Shipping length: 152mm
  • UPC: 815145028471

Item details

Made in USA

Customers reviews

Customer ratings (0)

0 / 5

Variations:

-5 %
Ensure consistent neck diameter and seating depth with the L.E. Wilson Expanding Mandrel Die for 7mm caliber, featuring durable stainless parts and interchangeable mandrels.
EXPANDING MANDREL DIES - 7MM CALIBER (0.283) DIE W/EXPANDING MANDREL
89.9 GBP 1 £89.90 * £94.90
In stock
Cartridge: 7 mm Diameter (in): 0.283 Die Style: Expander Die Product no.: 749018899
In stock
89.9 GBP 1 £89.90 * £94.90
-5 %
The L.E. Wilson Expanding Mandrel Die ensures consistent neck diameter for new brass cases, improving seating depth with durable stainless parts and interchangeable mandrels.
EXPANDING MANDREL DIES - 22 CALIBER (0.223) DIE W/EXPANDING MANDREL
89.9 GBP 3 £89.90 * £94.90
In stock
Cartridge: 22 Caliber (.223-.224) Diameter (in): 0.223 Die Style: Expander Die Product no.: 749018894
In stock
89.9 GBP 3 £89.90 * £94.90
-5 %
The L.E. Wilson Expanding Mandrel Die ensures consistent neck diameter on new brass cases, enhancing seating depth with durable stainless parts and interchangeable mandrels.
EXPANDING MANDREL DIES - 33 CALIBER (0.337) DIE W/EXPANDING MANDREL
89.9 GBP 1 £89.90 * £94.90
In stock
Diameter (in): 0.337 Die Style: Expander Die Product no.: 749018896
In stock
89.9 GBP 1 £89.90 * £94.90
-5 %
The L.E. Wilson Expanding Mandrel Die ensures consistent neck diameter for new brass cases, enhancing seating depth and accuracy with durable stainless parts.
EXPANDING MANDREL DIES - 6MM CALIBER (0.242) DIE W/EXPANDING MANDREL
89.9 GBP 1 £89.90 * £94.90
In stock
Diameter (in): 0.242 Die Style: Expander Die Product no.: 749018897
In stock
89.9 GBP 1 £89.90 * £94.90
The L.E. Wilson Expanding Mandrel Die ensures consistent neck diameter and seating depth for new brass cases, featuring stainless parts and interchangeable mandrels.
EXPANDING MANDREL DIES - 30 CALIBER (0.3075) DIE W/EXPANDING MANDREL
94.9 GBP 0 £94.90 *
Backorderable
Cartridge: 30 Caliber (.308) Diameter (in): 0.3075 Die Style: Expander Die Product no.: 749018895
Backorderable
94.9 GBP 0 £94.90 *
The L.E. Wilson Expanding Mandrel Die ensures consistent neck diameter and tension for new brass cases, enhancing seating depth and accuracy.
EXPANDING MANDREL DIES - 6.5MM CALIBER (0.263) DIE W/EXPANDING MANDREL
94.9 GBP 0 £94.90 *
Backorderable
Diameter (in): 0.263 Die Style: Expander Die Product no.: 749018898
Backorderable
94.9 GBP 0 £94.90 *

Customers also bought

Oops! Something went wrong.

We encountered an error while loading this content. Please refresh the page to continue. If the issue persists, contact our customer support.

Site Navigation
Product Categories
Ordering
Customer Service

Welcome!

to Brownells UK, your destination for anything gun related. With our roots in a genuine passion for firearms, we bring you an unmatched selection of Gun Parts, Firearm Accessories, Gunsmithing Tools, Scopes & Red Dot Sights and Expert Knowledge.

Whether you're looking to maintain, repair, or upgrade, we've got what you need!

For Shooters, By Shooters
We share your enthusiasm and know exactly what you're looking for because we're part of the community.

Massive Selection
From the essentials to the unique, find everything under one roof.

Our blend of tradition and innovation
Shop with the convenience of modern technology, backed by a legacy of experience.

Browse our collection and discover why we're the trusted name in shooting sports & hunting.

Brownells Norge - Komplett utvalg av ladeutstyr, våpendeler, kuler, hylser, kikkerter, optikk og luftvåpen Brownells Österreich - Einer der größten Lieferanten für Waffenteile, Büchsenmacherzubehör & Schießsportzubehör Brownells Switzerland - Einer der größten Lieferanten für Waffenteile, Büchsenmacherzubehör & Schießsportzubehör Brownells Deutschland - Einer der größten Lieferanten für Waffenteile, Büchsenmacherzubehör & Schießsportzubehör Brownells France - Le plus grand fournisseur d'Accessoires pour le tir, Pièces détachées & Outils d'Armurier Brownells Iberica - El mayor proveedor de accesorios para el Tiro, Piezas y herramientas del armero. Brownells Sverige - Världens största leverantör av Vapendelar, Vapensmide Verktyg & Skyttetillbehör Brownells Suomi Brownells Italia - Il negozio del più grande rivenditore di componenti e accessori per armi da tiro, difesa e caccia Brownells Polska - Największy na świecie dostawca części broni, narzędzi rusznikarskich & akcesoriów strzeleckich Brownells Česko - Největší světový dodavatel součástí zbraní, střeleckého příslušenství a zbrojního nářadí
*
Prices inclusive of duty & VAT.

© 2025 Brownells UK
Part of the Brownells Europe Group

Logo Brownells
Classical viewClassical view Mobile viewMobile view
Back to top