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 General Gunsmith Tools Cartridge Dummies GENCO INC. 338 WINCHESTER MAGNUM DUMMIES 5/BOX Support

Ensure safe function testing with Genco's .338 Winchester Magnum Dummies; designed to mimic factory ammo for reliable magazine feeding and action timing.

GENCO INC. 338 WINCHESTER MAGNUM DUMMIES 5/BOX

669338005
Variations
Filters:
Variations:

Variations:

Ensure safe function testing with Genco's .338 Winchester Magnum Dummies; designed to mimic factory ammo for reliable magazine feeding and action timing.
CENTERFIRE RIFLE DUMMY ROUNDS - 338 WINCHESTER MAGNUM DUMMIES 5/BOX
Not available
Cartridge: 338 Winchester Magnum Product no.: 669338005
Not available
23.9 GBP 0 £23.90 *
-12 %
Ensure safe function testing with Genco's 300 H&H Magnum Dummy Rounds, designed for reliable magazine feeding and action timing without the risk of accidental discharge.
CENTERFIRE RIFLE DUMMY ROUNDS - 300 H&H MAGNUM DUMMIES 5/BOX
22.9 GBP 50 £22.90 * £25.90
In stock
Cartridge: 300 H&H Magnum Product no.: 669301005
In stock
22.9 GBP 50 £22.90 * £25.90
Ensure safe function testing with GENCO INC. 280 Remington Dummy Rounds; inert, factory-spec dummies for reliable magazine feeding and action timing checks.
CENTERFIRE RIFLE DUMMY ROUNDS - 280 REMINGTON DUMMIES 5/BOX
Not available
Cartridge: 280 Remington Product no.: 367280005
Not available
21.9 GBP 0 £21.90 *
Ensure safe function testing with Genco's 7mm Remington Ultra Mag Dummy Rounds, designed for reliable magazine feeding and action timing without risk of accidental discharge.
CENTERFIRE RIFLE DUMMY ROUNDS - 7MM REMINGOTN ULTRA MAG DUMMIES 5/BOX
Not available
Cartridge: 7 mm Remington Ultra Magnum Product no.: 367284005
Not available
29.9 GBP 0 £29.90 *
Ensure safe function testing with GENCO's inert 338 Remington Ultra Mag Dummies, designed for reliable magazine feeding and action timing without risk.
CENTERFIRE RIFLE DUMMY ROUNDS - 338 REMINGTON ULTRA MAG DUMMIES 5/BOX
Not available
Cartridge: 338 Remington Ultra Magnum Product no.: 367339005
Not available
31.9 GBP 0 £31.90 *
Ensure safe function testing with Genco Inc. 7mm-08 Remington dummy rounds; inert, factory-spec, and ideal for checking magazine feeding and action timing.
CENTERFIRE RIFLE DUMMY ROUNDS - 7MM-08 REMINGTON DUMMIES 5/BOX
Not available
Cartridge: 7 mm - 08 Remington Product no.: 367708005
Not available
29.9 GBP 0 £29.90 *
Ensure safe function testing with Genco's inert .243 Winchester dummy rounds, designed to mimic factory specs for reliable magazine feeding and action timing.
CENTERFIRE RIFLE DUMMY ROUNDS - 243 WINCHESTER DUMMIES 5/BOX
Not available
Cartridge: 243 Winchester Product no.: 669243005
Not available
24.9 GBP 0 £24.90 *
Ensure safe function testing with Genco's .243 Winchester Dummy Rounds; factory-spec, inert, and ideal for checking magazine feeding and action timing.
CENTERFIRE RIFLE DUMMY ROUNDS - 243 WINCHESTER DUMMIES 20/BOX
Not available
Cartridge: 243 Winchester Product no.: 669243020
Not available
69.9 GBP 0 £69.90 *
Ensure safe function testing with GENCO's inert dummy rounds, designed to mimic factory specs for reliable magazine feeding and action timing without risk.
CENTERFIRE RIFLE DUMMY ROUNDS - 250 SAVAGE DUMMIES 5/BOX
Not available
Cartridge: 250 Savage Product no.: 669251005
Not available
22.9 GBP 0 £22.90 *
GENCO INC. 270 Winchester Dummy Rounds provide safe, reliable function testing for firearms, ensuring proper feeding, timing, and ejection without risk of discharge.
CENTERFIRE RIFLE DUMMY ROUNDS - 270 WINCHESTER DUMMIES 5/BOX
Not available
Cartridge: 270 Winchester Product no.: 669270005
Not available
24.9 GBP 0 £24.90 *
GENCO's .270 Winchester Dummies ensure safe function testing, eliminating accidental discharge while checking feeding, timing, and ejection in firearms.
CENTERFIRE RIFLE DUMMY ROUNDS - 270 WINCHESTER DUMMIES 20/BOX
Not available
Cartridge: 270 Winchester Product no.: 669270020
Not available
69.9 GBP 0 £69.90 *
Ensure safe function testing with Genco's inert dummy rounds, designed to replicate factory specs, ideal for checking feeding and action without risk.
CENTERFIRE RIFLE DUMMY ROUNDS - 284 WINCHESTER DUMMIES 5/BOX
Not available
Cartridge: 284 Winchester Product no.: 669284005
Not available
25.9 GBP 0 £25.90 *
Ensure safe function testing with Genco Inc. 358 Winchester Dummy Rounds; inert, factory-spec dummies for reliable magazine feeding and action timing checks.
CENTERFIRE RIFLE DUMMY ROUNDS - 358 WINCHESTER DUMMIES 5/BOX
Not available
Cartridge: 358 Winchester Product no.: 669358005
Not available
24.9 GBP 0 £24.90 *
Ensure safe function testing with GENCO INC. 7x57mm Mauser Dummy Rounds; inert, factory spec dummies for reliable magazine feeding and action timing checks.
CENTERFIRE RIFLE DUMMY ROUNDS - 7X57MM MAUSER DUMMIES 5/BOX
Not available
Cartridge: 7 mm Mauser (7 x 57 mm Mauser) Product no.: 669757005
Not available
26.9 GBP 8 £26.90 *
-10 %
Ensure safe function testing with GENCO INC. 270 WSM Dummy Rounds; designed for reliable magazine feeding and action timing without the risk of accidental discharge.
CENTERFIRE RIFLE DUMMY ROUNDS - 270 WSM DUMMIES 5/BOX
18.9 GBP 35 £18.90 * £20.90
In stock
Cartridge: 270 WSM (Winchester Short Mag) Product no.: 367000007
In stock
18.9 GBP 35 £18.90 * £20.90
Genco Inc.'s Centerfire Rifle Dummy Rounds provide safe function testing for all guns, ensuring reliable magazine feeding and action timing without risk of accidental discharge.
CENTERFIRE RIFLE DUMMY ROUNDS - 225 WINCHESTER CENTERFIRE RIFLE DUMMIES 20/BOX
Not available
Cartridge: 225 Winchester Product no.: 669225020
Not available
64.9 GBP 0 £64.90 *
18.9 22.9 16 GBP

Not available.

Product no.: 669338005

Notify on availability 23.9 GBP
18.9 22.9 16 GBP
Description Specification Customers reviews Accessories

GENCO INC. 338 WINCHESTER MAGNUM DUMMIES 5/BOX

Notify on availability

Description:

Ensure Safe Function Testing with CENTERFIRE RIFLE DUMMY ROUNDS

Manufactured by GENCO INC., these 338 Winchester Magnum Dummies are designed to meet exact specifications, including diameter, length dimensions, weight, and balance of factory-loaded ammunition. These DUMMIES provide the proper functioning characteristics needed to reliably check magazine feeding, action timing, extraction, and ejection for all firearms.

Why Choose DUMMIES?

Using live ammunition for function testing is unsafe and should be avoided. Instead, these inert dummies offer a professional and safe method for checking gun functionality before actual test-firing on the range. The cost-effectiveness of these dummies provides an additional incentive to incorporate them into your routine.

Key Features:

  • Distinct blackened case for easy recognition as DUMMIES
  • Ideal for use as a sales aid during demonstrations
  • Eliminates the risk of accidental discharge
  • Perfect for gun safety instruction classes

Specifications:

The Catch Up Pak contains 1 each of the following calibers:

  • .17 MACH 2
  • .17 HMR
  • .45 GAP
  • .480 Ruger
  • .220 Swift
  • .223 WSSM (Winchester Super Short Magnum)
  • .25 WSSM (Winchester Super Short Magnum)
  • .270 WSM (Winchester Short Magnum)
  • .300 Rem SA Ultra Mag
  • .300 Rem Ultra Mag
  • .338 Rem Ultra Mag
  • 7mm Rem Ultra Mag

Choose CENTERFIRE RIFLE DUMMY ROUNDS for a safe and effective way to test your firearms at Brownells UK.



Top takeaways

  1. GENCO INC.'s 338 Winchester Magnum dummy rounds are designed to the exact specifications of live ammunition for reliable testing of feeding, timing, extraction, and ejection in firearms.
  2. These dummy rounds are a safe and professional method for checking gun function, eliminating the risk of accidental discharge, making them suitable for demonstrations and safety instruction.
  3. The dummy rounds are easily identifiable by their blackened case, ensuring they are not confused with live ammunition, and are sold in a box containing 5 dummies.

Attributes

  • Cartridge: 
    338 Winchester Magnum
  • Quantity: 5
  • Delivery weight: 0.159kg
  • Shipping height: 10mm
  • Shipping width: 58mm
  • Shipping length: 107mm

Item details

Made in USA

Customers reviews

Customer ratings (6)

2 / 5
Definitely recommended

Brownells USA Works perfectly 05/10/2016

These are the perfect dummy round for testing function of your rifle before heading to the range. They fit the model 94 32ws and worked perfectly. Get your self a set of these durable dummy rounds.

Slightly recommend

Brownells USA Soft point bullets a bad choice 26/01/2015

I use these as intended on Lee-Enfield rifles. A great thing to tag along to gun shows (because they're inert) and perform the famed "bullet test" on a rifle's muzzle as well as to insert in the magazine to test the magazine, bolt face, extractor, ejector as well as to test chambering. Brownell's missed the boat on these by not adding a false primer in order to safely dry fire a rifle. I also object to the SP bullets they used instead of FMJ--the soft points get easily deformed if they should fail to properly chamber and hit the receiver sides. My sample bought 12 or more years ago are not painted black; they are more of a blackened chemical coating sort of like bluing. It does get scratched off but it serves to indicate that they are dummies and not live ammo.

Variations:

Ensure safe function testing with Genco's .338 Winchester Magnum Dummies; designed to mimic factory ammo for reliable magazine feeding and action timing.
CENTERFIRE RIFLE DUMMY ROUNDS - 338 WINCHESTER MAGNUM DUMMIES 5/BOX
Not available
Cartridge: 338 Winchester Magnum Product no.: 669338005
Not available
23.9 GBP 0 £23.90 *
-12 %
Ensure safe function testing with Genco's 300 H&H Magnum Dummy Rounds, designed for reliable magazine feeding and action timing without the risk of accidental discharge.
CENTERFIRE RIFLE DUMMY ROUNDS - 300 H&H MAGNUM DUMMIES 5/BOX
22.9 GBP 50 £22.90 * £25.90
In stock
Cartridge: 300 H&H Magnum Product no.: 669301005
In stock
22.9 GBP 50 £22.90 * £25.90
Ensure safe function testing with GENCO INC. 280 Remington Dummy Rounds; inert, factory-spec dummies for reliable magazine feeding and action timing checks.
CENTERFIRE RIFLE DUMMY ROUNDS - 280 REMINGTON DUMMIES 5/BOX
Not available
Cartridge: 280 Remington Product no.: 367280005
Not available
21.9 GBP 0 £21.90 *
Ensure safe function testing with Genco's 7mm Remington Ultra Mag Dummy Rounds, designed for reliable magazine feeding and action timing without risk of accidental discharge.
CENTERFIRE RIFLE DUMMY ROUNDS - 7MM REMINGOTN ULTRA MAG DUMMIES 5/BOX
Not available
Cartridge: 7 mm Remington Ultra Magnum Product no.: 367284005
Not available
29.9 GBP 0 £29.90 *
Ensure safe function testing with GENCO's inert 338 Remington Ultra Mag Dummies, designed for reliable magazine feeding and action timing without risk.
CENTERFIRE RIFLE DUMMY ROUNDS - 338 REMINGTON ULTRA MAG DUMMIES 5/BOX
Not available
Cartridge: 338 Remington Ultra Magnum Product no.: 367339005
Not available
31.9 GBP 0 £31.90 *
Ensure safe function testing with Genco Inc. 7mm-08 Remington dummy rounds; inert, factory-spec, and ideal for checking magazine feeding and action timing.
CENTERFIRE RIFLE DUMMY ROUNDS - 7MM-08 REMINGTON DUMMIES 5/BOX
Not available
Cartridge: 7 mm - 08 Remington Product no.: 367708005
Not available
29.9 GBP 0 £29.90 *
Ensure safe function testing with Genco's inert .243 Winchester dummy rounds, designed to mimic factory specs for reliable magazine feeding and action timing.
CENTERFIRE RIFLE DUMMY ROUNDS - 243 WINCHESTER DUMMIES 5/BOX
Not available
Cartridge: 243 Winchester Product no.: 669243005
Not available
24.9 GBP 0 £24.90 *
Ensure safe function testing with Genco's .243 Winchester Dummy Rounds; factory-spec, inert, and ideal for checking magazine feeding and action timing.
CENTERFIRE RIFLE DUMMY ROUNDS - 243 WINCHESTER DUMMIES 20/BOX
Not available
Cartridge: 243 Winchester Product no.: 669243020
Not available
69.9 GBP 0 £69.90 *
Ensure safe function testing with GENCO's inert dummy rounds, designed to mimic factory specs for reliable magazine feeding and action timing without risk.
CENTERFIRE RIFLE DUMMY ROUNDS - 250 SAVAGE DUMMIES 5/BOX
Not available
Cartridge: 250 Savage Product no.: 669251005
Not available
22.9 GBP 0 £22.90 *
GENCO INC. 270 Winchester Dummy Rounds provide safe, reliable function testing for firearms, ensuring proper feeding, timing, and ejection without risk of discharge.
CENTERFIRE RIFLE DUMMY ROUNDS - 270 WINCHESTER DUMMIES 5/BOX
Not available
Cartridge: 270 Winchester Product no.: 669270005
Not available
24.9 GBP 0 £24.90 *
GENCO's .270 Winchester Dummies ensure safe function testing, eliminating accidental discharge while checking feeding, timing, and ejection in firearms.
CENTERFIRE RIFLE DUMMY ROUNDS - 270 WINCHESTER DUMMIES 20/BOX
Not available
Cartridge: 270 Winchester Product no.: 669270020
Not available
69.9 GBP 0 £69.90 *
Ensure safe function testing with Genco's inert dummy rounds, designed to replicate factory specs, ideal for checking feeding and action without risk.
CENTERFIRE RIFLE DUMMY ROUNDS - 284 WINCHESTER DUMMIES 5/BOX
Not available
Cartridge: 284 Winchester Product no.: 669284005
Not available
25.9 GBP 0 £25.90 *
Ensure safe function testing with Genco Inc. 358 Winchester Dummy Rounds; inert, factory-spec dummies for reliable magazine feeding and action timing checks.
CENTERFIRE RIFLE DUMMY ROUNDS - 358 WINCHESTER DUMMIES 5/BOX
Not available
Cartridge: 358 Winchester Product no.: 669358005
Not available
24.9 GBP 0 £24.90 *
Ensure safe function testing with GENCO INC. 7x57mm Mauser Dummy Rounds; inert, factory spec dummies for reliable magazine feeding and action timing checks.
CENTERFIRE RIFLE DUMMY ROUNDS - 7X57MM MAUSER DUMMIES 5/BOX
Not available
Cartridge: 7 mm Mauser (7 x 57 mm Mauser) Product no.: 669757005
Not available
26.9 GBP 8 £26.90 *
-10 %
Ensure safe function testing with GENCO INC. 270 WSM Dummy Rounds; designed for reliable magazine feeding and action timing without the risk of accidental discharge.
CENTERFIRE RIFLE DUMMY ROUNDS - 270 WSM DUMMIES 5/BOX
18.9 GBP 35 £18.90 * £20.90
In stock
Cartridge: 270 WSM (Winchester Short Mag) Product no.: 367000007
In stock
18.9 GBP 35 £18.90 * £20.90
Genco Inc.'s Centerfire Rifle Dummy Rounds provide safe function testing for all guns, ensuring reliable magazine feeding and action timing without risk of accidental discharge.
CENTERFIRE RIFLE DUMMY ROUNDS - 225 WINCHESTER CENTERFIRE RIFLE DUMMIES 20/BOX
Not available
Cartridge: 225 Winchester Product no.: 669225020
Not available
64.9 GBP 0 £64.90 *

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