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Ensure a safe chamber with the HEADSPACE GAUGES - GO CLYMER 300 WSM. Perfect for accurate measurement 🔍 and easy identification!
  • CLYMER 300 WSM GO GAUGE HEADSPACE GAUGE STEEL
  • CLYMER 300 WSM GO GAUGE HEADSPACE GAUGE STEEL
  • CLYMER 300 WSM GO GAUGE HEADSPACE GAUGE STEEL
  • CLYMER 300 WSM GO GAUGE HEADSPACE GAUGE STEEL

CLYMER HEADSPACE GAUGES - GO - CLYMER 300 WSM GO GAUGE HEADSPACE GAUGE STEEL

184100263

Variations:

CLYMER 300 WSM GO GAUGE HEADSPACE GAUGE STEEL
64.9 GBP 21 £64.90 *
Cartridge: 300 WSM (Winchester Short Mag), 270 WSM (Winchester Short Mag), 325 WSM (Winchester Short Mag) Product no.: 184100263
In stock
64.9 GBP 21 £64.90 *
CLYMER 6MM BR GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 13 £54.90 *
Cartridge: 7 mm BR (Benchrest) Remington, 22 BR (Benchrest) Remington, 6 mm BR Product no.: 184100222
In stock
54.9 GBP 13 £54.90 *
CLYMER 22 WRF GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 1 £54.90 *
Cartridge: 17 HMR, 22 WRF, 22 RF Product no.: 184100230
In stock
54.9 GBP 1 £54.90 *
CLYMER 22 HORNET GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 18 £54.90 *
Cartridge: 22 Hornet, 17 Hornet Product no.: 184100235
In stock
54.9 GBP 18 £54.90 *
CLYMER 223 REMINGTON GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 15 £54.90 *
Cartridge: 223 Remington, 6 mm x 45 Product no.: 184100240
In stock
54.9 GBP 15 £54.90 *
CLYMER 22-250 REMINGTON GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 17 £54.90 *
Cartridge: 22-250 Remington Product no.: 184100250
In stock
54.9 GBP 17 £54.90 *
CLYMER 250 SAVAGE GO GAUGE HEADSPACE GUAGE STEEL
49.9 GBP 15 £49.90 *
Cartridge: 250 Savage Product no.: 184100255
In stock
49.9 GBP 15 £49.90 *
CLYMER 308 WINCHESTER GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 46 £54.90 *
Cartridge: 308 Winchester, 243 Winchester, 7 mm - 08 Remington, 358 Winchester, 260 Remington Product no.: 184100260
In stock
54.9 GBP 46 £54.90 *
CLYMER 7MM MAUSER GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 10 £54.90 *
Cartridge: 257 Roberts, 7 mm Mauser (7 x 57 mm Mauser) Product no.: 184100280
In stock
54.9 GBP 10 £54.90 *
CLYMER 284 WINCHESTER GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 44 £54.90 *
Cartridge: 284 Winchester, 6 mm - 284 Winchester, 30/284 Winchester, 25/284 Winchester Product no.: 184100287
In stock
54.9 GBP 44 £54.90 *
CLYMER 30-30 WINCHESTER GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 7 £54.90 *
Cartridge: 30-30 Winchester, 219 Zipper, 25-35 Winchester, 7-30 Waters, 30 Herrett, 32 Winchester Special, 32-40 Winchester, 356 Winchester, 303 Savage, 307 Winchester, 219 Donaldson Wasp, 357 Herrett, 219 Zipper Improved Product no.: 184100300
In stock
54.9 GBP 7 £54.90 *
CLYMER 30-40 KRAG GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 11 £54.90 *
Cartridge: 30-40 Krag, 303 British Product no.: 184100302
In stock
54.9 GBP 11 £54.90 *
CLYMER 300 REMINGTON ULTRA MAGNUM GO GAUGE HEADSPACE GAUGE STEEL
59.9 GBP 9 £59.90 *
Cartridge: 300 Remington Ultra Magnum, 7 mm Remington Ultra Magnum Product no.: 184100306
In stock
59.9 GBP 9 £59.90 *
CLYMER 30-06 SPRINGFIELD GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 23 £54.90 *
Cartridge: 30-06 Springfield, 270 Winchester, 25-06 Remington, 338-06, 35 Whelen, 8 mm-06 Product no.: 184100310
In stock
54.9 GBP 23 £54.90 *
CLYMER 45-70 GOVERNMENT GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 2 £54.90 *
Cartridge: 45-70 Government, 348 Winchester, 33 WCF, 40-65 Winchester Product no.: 184100330
In stock
54.9 GBP 2 £54.90 *
CLYMER 30 M1 CARBINE GO GAUGE HEADSPACE GAUGE STEEL
49.9 GBP 3 £49.90 *
Cartridge: 30 Carbine Product no.: 184100350
In stock
49.9 GBP 3 £49.90 *
CLYMER 357 MAGNUM GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 3 £54.90 *
Cartridge: 357 Magnum, 38 Special Product no.: 184100380
In stock
54.9 GBP 3 £54.90 *
CLYMER 38 SUPER GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 44 £54.90 *
Cartridge: 38 Super Product no.: 184100390
In stock
54.9 GBP 44 £54.90 *
CLYMER 40 S&W GO GAUGE HEADSPACE GAUGE STEEL
49.9 GBP 11 £49.90 *
Cartridge: 40 S&W Product no.: 184100400
In stock
49.9 GBP 11 £49.90 *
CLYMER 44 MAGNUM GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 20 £54.90 *
Cartridge: 44 Magnum, 44 Special Product no.: 184100430
In stock
54.9 GBP 20 £54.90 *
CLYMER 45 ACP GO GAUGE HEADSPACE GAUGE STEEL
49.9 GBP 18 £49.90 *
Cartridge: 45 Auto (ACP) Product no.: 184100450
In stock
49.9 GBP 18 £49.90 *
CLYMER 7.62X39MM GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 5 £54.90 *
Cartridge: 7.62 x 39 mm Russian Product no.: 184100490
In stock
54.9 GBP 5 £54.90 *
CLYMER 7.62X54R GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 17 £54.90 *
Cartridge: 7.62 x 54 mm Russian Product no.: 184100500
In stock
54.9 GBP 17 £54.90 *
CLYMER 45 LONG COLT GO GAUGE HEADSPACE GAUGE STEEL
49.9 GBP 6 £49.90 *
Cartridge: 45 (Long) Colt Product no.: 184100510
In stock
49.9 GBP 6 £49.90 *
CLYMER 12 GAUGE GO GAUGE HEADSPACE GAUGE STEEL
69.9 GBP 4 £69.90 *
Cartridge: 12 Gauge Product no.: 184110120
In stock
69.9 GBP 4 £69.90 *
CLYMER 20 GAUGE GO GAUGE HEADSPACE GAUGE STEEL
69.9 GBP 23 £69.90 *
Cartridge: 20 Gauge Product no.: 184110200
In stock
69.9 GBP 23 £69.90 *
CLYMER 5.56X45MM NATO GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 21 £54.90 *
Cartridge: 5.56 mm NATO Product no.: 184000035
In stock
54.9 GBP 21 £54.90 *
CLYMER 300 AAC BLACKOUT GO HEADSPACE GAUGE STEEL
54.9 GBP 28 £54.90 *
Cartridge: 300 AAC Blackout Product no.: 100011283
In stock
54.9 GBP 28 £54.90 *
CLYMER 224 VALKYRIE GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 9 £54.90 *
Cartridge: 224 Valkyrie Product no.: 184000077
In stock
54.9 GBP 9 £54.90 *
CLYMER 6.5MM CREEDMOOR GO HEADSPACE GAUGE STEEL
54.9 GBP 42 £54.90 *
Cartridge: 6.5 Creedmoor Product no.: 184000079
In stock
54.9 GBP 42 £54.90 *
CLYMER 22 LONG RIFLE GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 0 £54.90 *
Cartridge: 22 Long Rifle, 22 Short, 22 Long, 22 Bentz, 22 Match Product no.: 184100220
Backorderable
54.9 GBP 0 £54.90 *
CLYMER 6.5X55MM SWEDE GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 0 £54.90 *
Cartridge: 6.5 x 55 mm Swedish Mauser Product no.: 184100290
Backorderable
54.9 GBP 0 £54.90 *
CLYMER BELTED MAGNUM GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 0 £54.90 *
Cartridge: 300 Winchester Magnum, 375 H&H Magnum, 350 Remington Mag Product no.: 184100320
Backorderable
54.9 GBP 0 £54.90 *
CLYMER 204 RUGER GO GAUGE HEADSPACE GAUGE STEEL
49.9 GBP 0 £49.90 *
Cartridge: 204 Ruger Product no.: 184000033
Backorderable
49.9 GBP 0 £49.90 *
CLYMER 6MM REMINGTON GO GAUGE HEADSPACE GAUGE STEEL
42.9 GBP 1 £42.90 *
Cartridge: 6 mm Remington Product no.: 184100270
In stock
42.9 GBP 1 £42.90 *
-10 %
Cartridge: 218 Bee, 25-20 Winchester, 32-20 Winchester, 218 Mashburn Bee Product no.: 184100360
Not available
41.3 GBP 0 £41.30 * £45.90
42.9 69.9 36 GBP
64.9 GBP £64.90

Prices inclusive of duty & VAT.

Product no.: 184100263

Mfr. No.: GO300WSM

The only way to accurately measure and test the length of the chamber of the rifle. Essential when chambering a new barrel to ensure a tight, accurate, safe chamber. Whenever you buy a used gun, always check the headspace before firing. Gauges are etched with “Go” or “No-Go” and caliber/gauge name for easy identification. Both Forster and Clymer gauges are made to SAAMI specs.
In stock
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Variations:

CLYMER 300 WSM GO GAUGE HEADSPACE GAUGE STEEL
64.9 GBP 21 £64.90 *
Cartridge: 300 WSM (Winchester Short Mag), 270 WSM (Winchester Short Mag), 325 WSM (Winchester Short Mag) Product no.: 184100263
In stock
64.9 GBP 21 £64.90 *
CLYMER 6MM BR GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 13 £54.90 *
Cartridge: 7 mm BR (Benchrest) Remington, 22 BR (Benchrest) Remington, 6 mm BR Product no.: 184100222
In stock
54.9 GBP 13 £54.90 *
CLYMER 22 WRF GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 1 £54.90 *
Cartridge: 17 HMR, 22 WRF, 22 RF Product no.: 184100230
In stock
54.9 GBP 1 £54.90 *
CLYMER 22 HORNET GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 18 £54.90 *
Cartridge: 22 Hornet, 17 Hornet Product no.: 184100235
In stock
54.9 GBP 18 £54.90 *
CLYMER 223 REMINGTON GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 15 £54.90 *
Cartridge: 223 Remington, 6 mm x 45 Product no.: 184100240
In stock
54.9 GBP 15 £54.90 *
CLYMER 22-250 REMINGTON GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 17 £54.90 *
Cartridge: 22-250 Remington Product no.: 184100250
In stock
54.9 GBP 17 £54.90 *
CLYMER 250 SAVAGE GO GAUGE HEADSPACE GUAGE STEEL
49.9 GBP 15 £49.90 *
Cartridge: 250 Savage Product no.: 184100255
In stock
49.9 GBP 15 £49.90 *
CLYMER 308 WINCHESTER GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 46 £54.90 *
Cartridge: 308 Winchester, 243 Winchester, 7 mm - 08 Remington, 358 Winchester, 260 Remington Product no.: 184100260
In stock
54.9 GBP 46 £54.90 *
CLYMER 7MM MAUSER GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 10 £54.90 *
Cartridge: 257 Roberts, 7 mm Mauser (7 x 57 mm Mauser) Product no.: 184100280
In stock
54.9 GBP 10 £54.90 *
CLYMER 284 WINCHESTER GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 44 £54.90 *
Cartridge: 284 Winchester, 6 mm - 284 Winchester, 30/284 Winchester, 25/284 Winchester Product no.: 184100287
In stock
54.9 GBP 44 £54.90 *
CLYMER 30-30 WINCHESTER GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 7 £54.90 *
Cartridge: 30-30 Winchester, 219 Zipper, 25-35 Winchester, 7-30 Waters, 30 Herrett, 32 Winchester Special, 32-40 Winchester, 356 Winchester, 303 Savage, 307 Winchester, 219 Donaldson Wasp, 357 Herrett, 219 Zipper Improved Product no.: 184100300
In stock
54.9 GBP 7 £54.90 *
CLYMER 30-40 KRAG GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 11 £54.90 *
Cartridge: 30-40 Krag, 303 British Product no.: 184100302
In stock
54.9 GBP 11 £54.90 *
CLYMER 300 REMINGTON ULTRA MAGNUM GO GAUGE HEADSPACE GAUGE STEEL
59.9 GBP 9 £59.90 *
Cartridge: 300 Remington Ultra Magnum, 7 mm Remington Ultra Magnum Product no.: 184100306
In stock
59.9 GBP 9 £59.90 *
CLYMER 30-06 SPRINGFIELD GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 23 £54.90 *
Cartridge: 30-06 Springfield, 270 Winchester, 25-06 Remington, 338-06, 35 Whelen, 8 mm-06 Product no.: 184100310
In stock
54.9 GBP 23 £54.90 *
CLYMER 45-70 GOVERNMENT GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 2 £54.90 *
Cartridge: 45-70 Government, 348 Winchester, 33 WCF, 40-65 Winchester Product no.: 184100330
In stock
54.9 GBP 2 £54.90 *
CLYMER 30 M1 CARBINE GO GAUGE HEADSPACE GAUGE STEEL
49.9 GBP 3 £49.90 *
Cartridge: 30 Carbine Product no.: 184100350
In stock
49.9 GBP 3 £49.90 *
CLYMER 357 MAGNUM GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 3 £54.90 *
Cartridge: 357 Magnum, 38 Special Product no.: 184100380
In stock
54.9 GBP 3 £54.90 *
CLYMER 38 SUPER GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 44 £54.90 *
Cartridge: 38 Super Product no.: 184100390
In stock
54.9 GBP 44 £54.90 *
CLYMER 40 S&W GO GAUGE HEADSPACE GAUGE STEEL
49.9 GBP 11 £49.90 *
Cartridge: 40 S&W Product no.: 184100400
In stock
49.9 GBP 11 £49.90 *
CLYMER 44 MAGNUM GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 20 £54.90 *
Cartridge: 44 Magnum, 44 Special Product no.: 184100430
In stock
54.9 GBP 20 £54.90 *
CLYMER 45 ACP GO GAUGE HEADSPACE GAUGE STEEL
49.9 GBP 18 £49.90 *
Cartridge: 45 Auto (ACP) Product no.: 184100450
In stock
49.9 GBP 18 £49.90 *
CLYMER 7.62X39MM GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 5 £54.90 *
Cartridge: 7.62 x 39 mm Russian Product no.: 184100490
In stock
54.9 GBP 5 £54.90 *
CLYMER 7.62X54R GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 17 £54.90 *
Cartridge: 7.62 x 54 mm Russian Product no.: 184100500
In stock
54.9 GBP 17 £54.90 *
CLYMER 45 LONG COLT GO GAUGE HEADSPACE GAUGE STEEL
49.9 GBP 6 £49.90 *
Cartridge: 45 (Long) Colt Product no.: 184100510
In stock
49.9 GBP 6 £49.90 *
CLYMER 12 GAUGE GO GAUGE HEADSPACE GAUGE STEEL
69.9 GBP 4 £69.90 *
Cartridge: 12 Gauge Product no.: 184110120
In stock
69.9 GBP 4 £69.90 *
CLYMER 20 GAUGE GO GAUGE HEADSPACE GAUGE STEEL
69.9 GBP 23 £69.90 *
Cartridge: 20 Gauge Product no.: 184110200
In stock
69.9 GBP 23 £69.90 *
CLYMER 5.56X45MM NATO GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 21 £54.90 *
Cartridge: 5.56 mm NATO Product no.: 184000035
In stock
54.9 GBP 21 £54.90 *
CLYMER 300 AAC BLACKOUT GO HEADSPACE GAUGE STEEL
54.9 GBP 28 £54.90 *
Cartridge: 300 AAC Blackout Product no.: 100011283
In stock
54.9 GBP 28 £54.90 *
CLYMER 224 VALKYRIE GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 9 £54.90 *
Cartridge: 224 Valkyrie Product no.: 184000077
In stock
54.9 GBP 9 £54.90 *
CLYMER 6.5MM CREEDMOOR GO HEADSPACE GAUGE STEEL
54.9 GBP 42 £54.90 *
Cartridge: 6.5 Creedmoor Product no.: 184000079
In stock
54.9 GBP 42 £54.90 *
CLYMER 22 LONG RIFLE GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 0 £54.90 *
Cartridge: 22 Long Rifle, 22 Short, 22 Long, 22 Bentz, 22 Match Product no.: 184100220
Backorderable
54.9 GBP 0 £54.90 *
CLYMER 6.5X55MM SWEDE GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 0 £54.90 *
Cartridge: 6.5 x 55 mm Swedish Mauser Product no.: 184100290
Backorderable
54.9 GBP 0 £54.90 *
CLYMER BELTED MAGNUM GO GAUGE HEADSPACE GAUGE STEEL
54.9 GBP 0 £54.90 *
Cartridge: 300 Winchester Magnum, 375 H&H Magnum, 350 Remington Mag Product no.: 184100320
Backorderable
54.9 GBP 0 £54.90 *
CLYMER 204 RUGER GO GAUGE HEADSPACE GAUGE STEEL
49.9 GBP 0 £49.90 *
Cartridge: 204 Ruger Product no.: 184000033
Backorderable
49.9 GBP 0 £49.90 *
CLYMER 6MM REMINGTON GO GAUGE HEADSPACE GAUGE STEEL
42.9 GBP 1 £42.90 *
Cartridge: 6 mm Remington Product no.: 184100270
In stock
42.9 GBP 1 £42.90 *
-10 %
Cartridge: 218 Bee, 25-20 Winchester, 32-20 Winchester, 218 Mashburn Bee Product no.: 184100360
Not available
41.3 GBP 0 £41.30 * £45.90

Description:

Absolutely Essential For Accurate, Safe, Chamber Work
The only way to accurately measure and test the length of the chamber of the rifle. Essential when chambering a new barrel to ensure a tight, accurate, safe chamber. Whenever you buy a used gun, always check the headspace before firing. Gauges are etched with “Go” or “No-Go” and caliber/gauge name for easy identification. Both Forster and Clymer gauges are made to SAAMI specs.

Top takeaways

  1. The HEADSPACE GAUGES - GO Clymer 300 WSM GO GAUGE is essential for measuring the chamber length of a rifle, crucial for safety and accuracy, especially when fitting a new barrel or buying a used gun.
  2. These gauges are clearly marked with "Go" or "No-Go" and the caliber/gauge name, and are manufactured by Clymer to SAAMI specifications for reliability.
  3. The product is machined steel and compatible with various cartridges within the same caliber family, such as .30/30 and Magnum cartridges, ensuring versatility across different firearm models.

Attributes

  • Cartridge: 300 WSM (Winchester Short Mag),325 WSM (Winchester Short Mag),270 WSM (Winchester Short Mag)
  • Style: Go Gauge
  • Delivery weight: 0.045kg
  • Shipping height: 18mm
  • Shipping width: 18mm
  • Shipping length: 58mm

Item details

Made in USA

Customers reviews

Customer ratings (6)

3.5 / 5
Definitely recommended

Brownells USA No Problems 30/03/2017

works as advertized.

Definitely recommended

Brownells USA Safety First 09/03/2017

I purchase this Gauge after trying to locate a gunsmith near where I lived and worked to check the head space on my AR build. It was cheaper than a 2-3 hour drive and it work as it was designed.

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