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 Case Preparation Loading Blocks SINCLAIR INTERNATIONAL 223 FAMILY HEAVY-DUTY LOADING BLOCK Support

Durable, easy-to-clean loading blocks made from white polyethylene with finger grooves for grip, chamfered holes for easy entry, and dishwasher safe.

SINCLAIR INTERNATIONAL 223 FAMILY HEAVY-DUTY LOADING BLOCK

749001878

Filters:

Variations
Filters:
Variations:

Variations:

Durable, easy-to-clean loading blocks made from white polyethylene with finger grooves for grip, chamfered holes for easy entry, and dishwasher safe.
HEAVY DUTY POLY LOADING BLOCKS - 223 FAMILY HEAVY-DUTY LOADING BLOCK
Not available
Cartridge: 223 Remington, 204 Ruger, 5.56 mm NATO, 300 AAC Blackout, 221 Remington Fireball, 222 Remington, 17 Remington, 222 Remington Mag, 17 Remington Fireball Material: Poly Rounds Held: 50 Product no.: 749001878
Not available
28.9 GBP 0 £28.90 *
Durable, easy-to-clean HEAVY DUTY POLY LOADING BLOCKS with finger grooves and chamfered holes for easy case entry, perfect for medium and long cartridges.
HEAVY DUTY POLY LOADING BLOCKS - 6.5X284 WIN HEAVY-DUTY LOADING BLOCK
Not available
Cartridge: 284 Winchester Material: Poly Rounds Held: 50 Product no.: 749001872
Not available
28.9 GBP 0 £28.90 *
Durable, easy-to-clean HEAVY DUTY POLY LOADING BLOCKS designed for specific cases, with finger grooves for grip and dishwasher safe for effortless maintenance.
HEAVY DUTY POLY LOADING BLOCKS - 338 LAPUA HEAVY-DUTY LOADING BLOCK
Not available
Cartridge: 338 Lapua, 45-70 Government, 378 Weatherby Magnum Material: Poly Rounds Held: 50 Product no.: 749001873
Not available
26.9 GBP 0 £26.90 *
Durable white polyethylene loading blocks with 50 round capacity, easy to clean, chamfered holes for smooth case entry, and finger grooves for a secure grip.
HEAVY DUTY POLY LOADING BLOCKS - WSM/ULTRA MAG FAMILY HEAVY-DUTY LOADING BLOCK
Not available
Cartridge: 223 WSSM (Winchester Super Short Mag), 243 WSSM (Winchester Super Short Mag) Material: Poly Rounds Held: 50 Product no.: 749001874
Not available
28.9 GBP 0 £28.90 *
Durable, easy-to-clean HEAVY DUTY POLY LOADING BLOCKS with chamfered holes and finger grooves, perfect for medium/long cartridges and dishwasher safe.
HEAVY DUTY POLY LOADING BLOCKS - BELTED MAGNUMS HEAVY-DUTY LOADING BLOCK
Not available
Cartridge: Belted Magnums Material: Poly Rounds Held: 50 Product no.: 749001875
Not available
26.9 GBP 0 £26.90 *
Durable, easy-to-clean HEAVY DUTY POLY LOADING BLOCKS with finger grooves, chamfered holes, and dishwasher safe design; perfect for medium and long cartridges.
HEAVY DUTY POLY LOADING BLOCKS - PPC FAMILY HEAVY-DUTY LOADING BLOCK
Not available
Cartridge: PPC Family Material: Poly Rounds Held: 50 Product no.: 749001877
Not available
28.9 GBP 0 £28.90 *
Durable, easy-to-clean HEAVY DUTY POLY LOADING BLOCKS with finger grooves, chamfered holes, and dishwasher safe design, ideal for medium and long cartridges.
HEAVY DUTY POLY LOADING BLOCKS - 308 FAMILY HEAVY-DUTY LOADING BLOCK
Not available
Cartridge: 270 Winchester, 243 Winchester, 22-250 Remington, 25-06 Remington, 220 Swift, 250 Savage, 257 Roberts, 300 Savage, 225 Winchester, 280 Remington, 284 Winchester, 22 BR (Benchrest) Remington, 30-06 Spring Material: Poly Rounds Held: 50 Product no.: 749001885
Not available
28.9 GBP 0 £28.90 *
0 0 7 GBP

Not available.

Product no.: 749001878

Mfr. No.: 08-4100

Notify on availability 28.9 GBP
0 0 7 GBP
Description Specification Customers reviews Accessories

SINCLAIR INTERNATIONAL 223 FAMILY HEAVY-DUTY LOADING BLOCK

Notify on availability

Description:

Durable and Efficient Loading Solution for Reloaders

The HEAVY DUTY POLY LOADING BLOCKS by SINCLAIR INTERNATIONAL are the perfect companion for every reloader looking for efficiency and reliability.

Product Features:

  • Machined from solid white polyethylene for durability.
  • Easy to clean and dishwasher safe.
  • Custom machined holes to fit specific cases for a secure hold.
  • Finger grooves for an enhanced grip.
  • Slight chamfer on each hole for easy case head entry.
  • 50 round blocks are 1" thick, ideal for medium and long length cartridges.
  • The #749-001-844 block features 32 holes tailored to case head size.

Our choice of white polyethylene ensures that any spilled powder is easily visible, making cleanup a breeze. Upgrade your reloading setup with these efficient loading blocks from SINCLAIR INTERNATIONAL.



Top takeaways

  1. These loading blocks are made from durable white polyethylene, easy to clean and dishwasher safe, with finger grooves for a secure grip.
  2. Designed to fit specific cartridges including 223 Remington and 5.56 mm NATO, the blocks feature chamfered holes for easy case insertion.
  3. The blocks can hold 50 rounds, except for #749-001-844 which holds 32, and are 1" thick to accommodate medium and long cartridges securely.

Attributes

  • Cartridge: 
    223 Remington
    , 
    17 Remington
    , 
    204 Ruger
    , 
    300 AAC Blackout
    , 
    221 Remington Fireball
    , 
    17 Remington Fireball
    , 
    5.56 mm NATO
    , 
    222 Remington
    , 
    222 Remington Mag
  • Material: 
    Poly
  • Rounds Held: 
    50
  • Delivery weight: 0.408kg
  • Shipping height: 25mm
  • Shipping width: 104mm
  • Shipping length: 198mm

Item details

Made in USA

Customers reviews

Customer ratings (12)

5 / 5
Definitely recommended

Brownells USA Excellent loading blocks 14/09/2013

These are the best loading blocks out there. Cases are held snugly and they are durable, light and easy to handle. I love the chamfered mouths making it easy to insert the cases. I highly recommend them.

Definitely recommended

Brownells USA Excellent 09/08/2013

Excellent loading block, well laid out. Will last several lifetimes, my grandson will probably get it. Nice snug fit around cases but easy to insert due to a nice chamfer around the drilled holes.

Variations:

Durable, easy-to-clean loading blocks made from white polyethylene with finger grooves for grip, chamfered holes for easy entry, and dishwasher safe.
HEAVY DUTY POLY LOADING BLOCKS - 223 FAMILY HEAVY-DUTY LOADING BLOCK
Not available
Cartridge: 223 Remington, 204 Ruger, 5.56 mm NATO, 300 AAC Blackout, 221 Remington Fireball, 222 Remington, 17 Remington, 222 Remington Mag, 17 Remington Fireball Material: Poly Rounds Held: 50 Product no.: 749001878
Not available
28.9 GBP 0 £28.90 *
Durable, easy-to-clean HEAVY DUTY POLY LOADING BLOCKS with finger grooves and chamfered holes for easy case entry, perfect for medium and long cartridges.
HEAVY DUTY POLY LOADING BLOCKS - 6.5X284 WIN HEAVY-DUTY LOADING BLOCK
Not available
Cartridge: 284 Winchester Material: Poly Rounds Held: 50 Product no.: 749001872
Not available
28.9 GBP 0 £28.90 *
Durable, easy-to-clean HEAVY DUTY POLY LOADING BLOCKS designed for specific cases, with finger grooves for grip and dishwasher safe for effortless maintenance.
HEAVY DUTY POLY LOADING BLOCKS - 338 LAPUA HEAVY-DUTY LOADING BLOCK
Not available
Cartridge: 338 Lapua, 45-70 Government, 378 Weatherby Magnum Material: Poly Rounds Held: 50 Product no.: 749001873
Not available
26.9 GBP 0 £26.90 *
Durable white polyethylene loading blocks with 50 round capacity, easy to clean, chamfered holes for smooth case entry, and finger grooves for a secure grip.
HEAVY DUTY POLY LOADING BLOCKS - WSM/ULTRA MAG FAMILY HEAVY-DUTY LOADING BLOCK
Not available
Cartridge: 223 WSSM (Winchester Super Short Mag), 243 WSSM (Winchester Super Short Mag) Material: Poly Rounds Held: 50 Product no.: 749001874
Not available
28.9 GBP 0 £28.90 *
Durable, easy-to-clean HEAVY DUTY POLY LOADING BLOCKS with chamfered holes and finger grooves, perfect for medium/long cartridges and dishwasher safe.
HEAVY DUTY POLY LOADING BLOCKS - BELTED MAGNUMS HEAVY-DUTY LOADING BLOCK
Not available
Cartridge: Belted Magnums Material: Poly Rounds Held: 50 Product no.: 749001875
Not available
26.9 GBP 0 £26.90 *
Durable, easy-to-clean HEAVY DUTY POLY LOADING BLOCKS with finger grooves, chamfered holes, and dishwasher safe design; perfect for medium and long cartridges.
HEAVY DUTY POLY LOADING BLOCKS - PPC FAMILY HEAVY-DUTY LOADING BLOCK
Not available
Cartridge: PPC Family Material: Poly Rounds Held: 50 Product no.: 749001877
Not available
28.9 GBP 0 £28.90 *
Durable, easy-to-clean HEAVY DUTY POLY LOADING BLOCKS with finger grooves, chamfered holes, and dishwasher safe design, ideal for medium and long cartridges.
HEAVY DUTY POLY LOADING BLOCKS - 308 FAMILY HEAVY-DUTY LOADING BLOCK
Not available
Cartridge: 270 Winchester, 243 Winchester, 22-250 Remington, 25-06 Remington, 220 Swift, 250 Savage, 257 Roberts, 300 Savage, 225 Winchester, 280 Remington, 284 Winchester, 22 BR (Benchrest) Remington, 30-06 Spring Material: Poly Rounds Held: 50 Product no.: 749001885
Not available
28.9 GBP 0 £28.90 *

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