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

Gunsmith Tools Barrel Tools Reamers Shotgun Reamers CLYMER 12 GAUGE BACK-BORE REAMER .740 DIA. Support

The CLYMER 12 Gauge Back-Bore Reamer .740 dia. enhances your shotgun's performance by enlarging the bore for optimal choke adjustments and improved shot patterns.
-5 %

CLYMER 12 GAUGE BACK-BORE REAMER .740 DIA.

184030740
Variations
Filters:
Variations:

Variations:

-5 %
The CLYMER 12 Gauge Back-Bore Reamer .740 dia. enhances your shotgun's performance by enlarging the bore for optimal choke adjustments and improved shot patterns.
"BACK-BORE" REAMERS - 12 GAUGE BACK-BORE REAMER .740 DIA.
189.9 GBP 18 £189.90 * £199.90
In stock
Cartridge: 12 Gauge Style: Back Bore Product no.: 184030740
In stock
189.9 GBP 18 £189.90 * £199.90
-7 %
Enhance your shotgun's performance with CLYMER Back-Bore Reamers, perfect for choke modifications and efficient bore repairs in 12 gauge.
"BACK-BORE" REAMERS - 12 GAUGE BACK-BORE HANDLE
69.9 GBP 4 £69.90 * £74.90
In stock
Cartridge: 12 Gauge Style: Back Bore Product no.: 184030012
In stock
69.9 GBP 4 £69.90 * £74.90
-6 %
CLYMER 12 Gauge Back-Bore Reamers enhance shotgun performance by altering bore-to-choke constrictions, perfect for barrel modifications and restoring pitted bores.
"BACK-BORE" REAMERS - 12 GAUGE BACK-BORE REAMER .730 DIA.
164.9 GBP 7 £164.90 * £174.90
In stock
Cartridge: 12 Gauge Style: Back Bore Product no.: 184030730
In stock
164.9 GBP 7 £164.90 * £174.90
-5 %
Enhance your shotgun's performance with CLYMER Back-Bore Reamers, designed for precise bore modifications and improved choke configurations in 12 gauge.
"BACK-BORE" REAMERS - 12 GAUGE BACK-BORE REAMER .735 DIA.
184.9 GBP 9 £184.90 * £194.90
In stock
Cartridge: 12 Gauge Style: Back Bore Product no.: 184030735
In stock
184.9 GBP 9 £184.90 * £194.90
69.9 189.9 4 GBP
-5 %
MSRP £199.90
189.9 GBP £189.90

Prices inclusive of duty & VAT.

Product no.: 184030740

Mfr. No.: BR12GA740

12 Gauge Back-Bore Reamer .740 dia.
In stock More than 10 pieces in USA warehouse
Be the first to rate this product
1
2
3
4
5
6
7
8
9
10+
-5 %
MSRP £199.90
£189.90

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.
  • Enlarges bore efficiently
  • Compatible with 12 gauge
  • Durable M-7 steel construction
Wish List Ask question
69.9 189.9 4 GBP
Description Specification Customers reviews Accessories

CLYMER 12 GAUGE BACK-BORE REAMER .740 DIA.

-5 %
MSRP £199.90
189.9 GBP £189.90

Prices inclusive of duty & VAT.

1
2
3
4
5
6
7
8
9
10+
-5 %
MSRP £199.90
£189.90

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:

Enhance Your Shooting Experience with CLYMER Back-Bore Reamers

Introducing the BACK-BORE REAMERS from CLYMER, designed specifically for 12 gauge firearms. This innovative tool allows you to easily modify your bore for optimal performance.

Product Features:

  • Model: 12 Gauge Back-Bore Reamer .740 dia.
  • Length: 5" (12.7cm)
  • Material: Made of M-7 high speed steel, hardened and drawn
  • Function: Enlarges bore to easily change bore-to-choke constrictions

For best results, please refer to the reamer stock number from the provided chart.



Attributes

  • Cartridge: 
    12 Gauge
  • Style: 
    Back Bore
  • Delivery weight: 0.181kg
  • Shipping height: 43mm
  • Shipping width: 58mm
  • Shipping length: 246mm

Item details

Made in USA

Customers reviews

Customer ratings (0)

0 / 5

Variations:

-5 %
The CLYMER 12 Gauge Back-Bore Reamer .740 dia. enhances your shotgun's performance by enlarging the bore for optimal choke adjustments and improved shot patterns.
"BACK-BORE" REAMERS - 12 GAUGE BACK-BORE REAMER .740 DIA.
189.9 GBP 18 £189.90 * £199.90
In stock
Cartridge: 12 Gauge Style: Back Bore Product no.: 184030740
In stock
189.9 GBP 18 £189.90 * £199.90
-7 %
Enhance your shotgun's performance with CLYMER Back-Bore Reamers, perfect for choke modifications and efficient bore repairs in 12 gauge.
"BACK-BORE" REAMERS - 12 GAUGE BACK-BORE HANDLE
69.9 GBP 4 £69.90 * £74.90
In stock
Cartridge: 12 Gauge Style: Back Bore Product no.: 184030012
In stock
69.9 GBP 4 £69.90 * £74.90
-6 %
CLYMER 12 Gauge Back-Bore Reamers enhance shotgun performance by altering bore-to-choke constrictions, perfect for barrel modifications and restoring pitted bores.
"BACK-BORE" REAMERS - 12 GAUGE BACK-BORE REAMER .730 DIA.
164.9 GBP 7 £164.90 * £174.90
In stock
Cartridge: 12 Gauge Style: Back Bore Product no.: 184030730
In stock
164.9 GBP 7 £164.90 * £174.90
-5 %
Enhance your shotgun's performance with CLYMER Back-Bore Reamers, designed for precise bore modifications and improved choke configurations in 12 gauge.
"BACK-BORE" REAMERS - 12 GAUGE BACK-BORE REAMER .735 DIA.
184.9 GBP 9 £184.90 * £194.90
In stock
Cartridge: 12 Gauge Style: Back Bore Product no.: 184030735
In stock
184.9 GBP 9 £184.90 * £194.90

Customers also bought

Alternative items

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