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Home Gunsmith Tools Measuring Tools Headspace Gauges CLYMER NO-GO HEADSPACE GAUGES Support
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Ensure a safe chamber with the HEADSPACE GAUGES - No-Go Clymer 300 Remington Ultra Magnum. 🔧 Perfect for accurate rifle testing!
  • CLYMER NO GO 300 REMINGTON ULTRA MAGNUM HEADSPACE GAUGE STEEL
  • CLYMER NO GO 300 REMINGTON ULTRA MAGNUM HEADSPACE GAUGE STEEL
  • CLYMER NO GO 300 REMINGTON ULTRA MAGNUM HEADSPACE GAUGE STEEL
  • CLYMER NO GO 300 REMINGTON ULTRA MAGNUM HEADSPACE GAUGE STEEL

CLYMER NO-GO HEADSPACE GAUGES - CLYMER NO GO 300 REMINGTON ULTRA MAGNUM HEADSPACE GAUGE STEEL

184100307

Variations:

Ensure a safe chamber with the HEADSPACE GAUGES - No-Go Clymer 300 Remington Ultra Magnum. 🔧 Perfect for accurate rifle testing!
CLYMER NO GO 300 REMINGTON ULTRA MAGNUM HEADSPACE GAUGE STEEL
64.9 GBP 41 £64.90 *
Cartridge: 300 Remington Ultra Magnum, 7 mm Remington Ultra Magnum, 375 Remington Ultra Magnum Height: 0.52'' Length: 2.618'' Model Number: NO GO 300 Remington Ultra Magnum Weight: 0.2 lbs Width: 0.52'' Product no.: 184100307
In stock
64.9 GBP 41 £64.90 *
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Ensure safe chambering with the HEADSPACE GAUGES - NO-GO CLYMER 22 Long Rifle gauge. 🔍 Perfect for accurate measurements and checks!
CLYMER NO GO 22 LONG RIFLE HEADSPACE GAUGE STEEL
54.9 GBP 5 £54.90 *
Cartridge: 22 Long Rifle, 22 Short, 22 Long, 22 Bentz, 22 Match Height: 0.284'' Length: 0.75'' Model Number: NO GO 22 Long Rifle Weight: 0.1 lbs Width: 0.284'' Product no.: 184100221
In stock
54.9 GBP 5 £54.90 *
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Ensure a safe chamber with the HEADSPACE GAUGES - NO-GO CLYMER 6MM BR. 🛠️ Perfect for accurate measurement and testing!
CLYMER NO GO 6MM BR HEADSPACE GAUGE STEEL
59.9 GBP 12 £59.90 *
Cartridge: 6 mm BR Norma, 7 mm BR (Benchrest) Remington, 22 BR (Benchrest) Remington Height: 0.46'' Length: 1.317'' Model Number: NO GO 6mm BR Weight: 0.1 lbs Width: 0.46'' Product no.: 184100223
In stock
59.9 GBP 12 £59.90 *
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Ensure precision with the CLYMER No-Go Gauge for .22 Rimfire Mag 🔍. Perfect for 17 HMR, 22 WRF, and 22 RF cartridges!
CLYMER NO GO 22 WRF HEADSPACE GAUGE STEEL
54.9 GBP 12 £54.90 *
Cartridge: 17 HMR, 22 WRF, 22 RF Height: 0.284'' Length: 0.75'' Model Number: NO GO 22 WRF Weight: 0.1 lbs Width: 0.284'' Product no.: 184100231
In stock
54.9 GBP 12 £54.90 *
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Ensure safe and accurate chambering with the Clymer 223 Remington No-Go Gauge. Perfect for checking headspace! 🔍
CLYMER NO GO 223 REMINGTON HEADSPACE GAUGE STEEL
54.9 GBP 23 £54.90 *
Cartridge: 223 Remington, 6 mm x 45 Height: 0.355'' Length: 1.623'' Model Number: NO GO 223 Remington Weight: 0.1 lbs Width: 0.355'' Product no.: 184100241
In stock
54.9 GBP 23 £54.90 *
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Ensure precision with the CLYMER No-Go Gauge for .22-250 Remington. 🔧 Perfect for reliable headspace measurements!
CLYMER NO GO 22-250 REMINGTON HEADSPACE GAUGE STEEL
54.9 GBP 13 £54.90 *
Cartridge: 22-250 Remington Height: 0.405'' Length: 1.733'' Model Number: NO GO 22-250 Remington Weight: 0.1 lbs Width: 0.405'' Product no.: 184100251
In stock
54.9 GBP 13 £54.90 *
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Ensure precision with Clymer's No-Go Gauge for .308 Winchester and more! 🔧 Perfect for your reloading needs.
CLYMER NO GO 308 WINCHESTER FAMILY HEADSPACE GAUGE STEEL
54.9 GBP 9 £54.90 *
Cartridge: 308 Winchester, 243 Winchester, 7 mm - 08 Remington, 358 Winchester, 260 Remington Height: 0.455'' Length: 1.895'' Model Number: NO GO 308 Winchester Family Weight: 0.1 lbs Width: 0.455'' Product no.: 184100261
In stock
54.9 GBP 9 £54.90 *
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Ensure a safe chamber with the CLYMER No-Go Gauge for 300 WSM rifles. Essential for accuracy and safety! 🔍 Check your headspace today!
CLYMER NO GO 300 WSM HEADSPACE GAUGE STEEL
64.9 GBP 3 £64.90 *
Cartridge: 300 WSM (Winchester Short Mag), 270 WSM (Winchester Short Mag), 338 Winchester Magnum, 325 WSM (Winchester Short Mag) Height: 0.53'' Length: 1.885'' Model Number: NO GO 300 WSM Weight: 0.2 lbs Width: 0.53'' Product no.: 184100264
In stock
64.9 GBP 3 £64.90 *
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Ensure precision with the CLYMER 7x57mm Mauser No-Go Gauge. Perfect for .257 Roberts and 7mm Mauser cartridges. 🛠️ Get yours today!
CLYMER NO GO 7X57MM MAUSER HEADSPACE GAUGE STEEL
54.9 GBP 15 £54.90 *
Cartridge: 257 Roberts, 7 mm Mauser (7 x 57 mm Mauser) Height: 0.43'' Length: 1.952'' Model Number: NO GO 7x57mm Mauser Weight: 0.1 lbs Width: 0.43'' Product no.: 184100281
In stock
54.9 GBP 15 £54.90 *
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Ensure precision with the CLYMER No-Go Gauge for 6.5x55mm Swedish Mauser. 🛠️ Perfect for your firearm needs!
CLYMER NO GO 6.5X55MM SWEDE HEADSPACE GAUGE STEEL
54.9 GBP 10 £54.90 *
Cartridge: 6.5 x 55 mm Swedish Mauser Height: 0.43'' Length: 1.952'' Model Number: NO GO 6.5x55mm Swedish Mauser Weight: 0.1 lbs Width: 0.43'' Product no.: 184100291
In stock
54.9 GBP 10 £54.90 *
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Ensure precision with the CLYMER No-Go Gauge for .30/30 Winchester 🔧. Perfect for various cartridges, it's a must-have for every gunsmith!
CLYMER NO GO 30-30 WINCHESTER HEADSPACE GAUGE STEEL
54.9 GBP 4 £54.90 *
Cartridge: 30-30 Winchester, 375 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 Height: 0.4'' Length: 0.73'' Model Number: 30-30 Winchester NO GO Weight: 0.1 lbs Width: 0.4'' Product no.: 184100301
In stock
54.9 GBP 4 £54.90 *
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Ensure precision with the CLYMER No-Go Gauge for .30-40 Krag 🔧. Ideal for gunsmiths and enthusiasts alike!
CLYMER NO GO 30-40 KRAG HEADSPACE GAUGE STEEL
54.9 GBP 10 £54.90 *
Cartridge: 30-40 Krag, 303 British Height: 0.44'' Length: 0.73'' Model Number: NO GO 30-40 Krag Weight: 0.1 lbs Width: 0.44'' Product no.: 184100303
In stock
54.9 GBP 10 £54.90 *
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Ensure a safe chamber with the HEADSPACE GAUGES - NO-GO CLYMER 30-06. Perfect for testing used guns and new barrels! 🔍
CLYMER NO GO 30-06 SPRINGFIELD HEADSPACE GAUGE STEEL
54.9 GBP 17 £54.90 *
Cartridge: 30-06 Springfield, 270 Winchester, 25-06 Remington, 338-06, 35 Whelen, 6.5-06, 8 mm-06 Height: 0.445'' Length: 2.291'' Model Number: NO GO 30-06 Springfield Weight: 0.2 lbs Width: 0.445'' Product no.: 184100311
In stock
54.9 GBP 17 £54.90 *
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Ensure a safe chamber with the Clymer No-Go Gauge for 300 Win Mag & more. 🛠️ Perfect for testing used guns and new barrels!
CLYMER NO GO BELTED MAGNUM HEADSPACE GAUGE STEEL
64.9 GBP 11 £64.90 *
Cartridge: 300 Winchester Magnum, 375 H&H Magnum, 350 Remington Mag Height: 0.48'' Length: 0.94'' Model Number: NO GO Belted Magnum Weight: 0.1 lbs Width: 0.48'' Product no.: 184100321
In stock
64.9 GBP 11 £64.90 *
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Ensure safety with the Clymer No-Go Gauge for 45-70 Government rifles. 🛠️ Perfect for checking headspace before firing!
CLYMER NO GO 45-70 GOVERNMENT HEADSPACE GAUGE STEEL
54.9 GBP 13 £54.90 *
Cartridge: 45-70 Government, 348 Winchester, 33 WCF, 40-65 Winchester Height: 0.495'' Length: 0.73'' Model Number: NO GO 45-70 Government Weight: 0.1 lbs Width: 0.495'' Product no.: 184100331
In stock
54.9 GBP 13 £54.90 *
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Ensure safe chambering with the Clymer 9mm Luger No-Go Gauge. 🔧 Perfect for checking headspace on used guns!
CLYMER NO GO 9MM LUGER HEADSPACE GAUGE STEEL
54.9 GBP 22 £54.90 *
Cartridge: 9 mm Luger Height: 0.375'' Length: 0.786'' Model Number: NO GO 9mm Luger Weight: 0.1 lbs Width: 0.375'' Product no.: 184100341
In stock
54.9 GBP 22 £54.90 *
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Ensure a safe chamber with the Clymer No-Go Gauge for 30 M1 Carbine. 🛠️ Perfect for checking headspace on used guns!
CLYMER NO GO 30 M1 CARBINE HEADSPACE GAUGE STEEL
54.9 GBP 14 £54.90 *
Cartridge: 30 Carbine Height: 0.335'' Length: 1.3'' Model Number: NO GO 30 M1 Carbine Weight: 0.1 lbs Width: 0.335'' Product no.: 184100351
In stock
54.9 GBP 14 £54.90 *
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Ensure a safe chamber with the Clymer No-Go Gauge for 25-20 Winchester. 🛠️ Perfect for checking used guns and chambering new barrels!
CLYMER NO GO 25-20 WINCHESTER HEADSPACE GAUGE STEEL
54.9 GBP 17 £54.90 *
Cartridge: 218 Bee, 25-20 Winchester, 32-20 Winchester, 218 Mashburn Bee Height: 0.325'' Length: 0.73'' Model Number: NO GO 25-20 Winchester Weight: 0.1 lbs Width: 0.325'' Product no.: 184100361
In stock
54.9 GBP 17 £54.90 *
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Ensure your rifle's safety with the CLYMER 357 Magnum No-Go Gauge. 🛠️ Perfect for checking headspace before firing!
CLYMER NO GO 357 MAGNUM HEADSPACE GAUGE STEEL
54.9 GBP 1 £54.90 *
Cartridge: 357 Magnum, 38 Special Height: 0.375'' Length: 0.73'' Model Number: NO GO 357 Magnum Weight: 0.1 lbs Width: 0.375'' Product no.: 184100381
In stock
54.9 GBP 1 £54.90 *
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Ensure a safe chamber with the Clymer 38 Super No-Go Gauge. 🛠️ Perfect for checking used guns and chambering new barrels!
CLYMER NO GO 38 SUPER HEADSPACE GAUGE STEEL
54.9 GBP 2 £54.90 *
Cartridge: 38 Super Height: 0.38'' Length: 0.93'' Model Number: NO GO 38 Super Weight: 0.1 lbs Width: 0.38'' Product no.: 184100391
In stock
54.9 GBP 2 £54.90 *
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Ensure precision with the CLYMER No-Go Gauge for .44 Magnum 🔧. Ideal for accurate firearm measurements and compatibility.
CLYMER NO GO 44 MAGNUM HEADSPACE GAUGE STEEL
54.9 GBP 2 £54.90 *
Cartridge: 44 Magnum, 44 Special Height: 0.45'' Length: 0.73'' Model Number: NO GO 44 Magnum Weight: 0.1 lbs Width: 0.45'' Product no.: 184100431
In stock
54.9 GBP 2 £54.90 *
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Ensure safe chambering with the Clymer 45 ACP No-Go Gauge. 🔍 Accurate measurements for used guns and new barrels. Check headspace before firing!
CLYMER NO GO 45 ACP HEADSPACE GAUGE STEEL
54.9 GBP 36 £54.90 *
Cartridge: 45 Auto (ACP) Height: 0.47'' Length: 0.93'' Model Number: NO GO 45 ACP Weight: 0.1 lbs Width: 0.47'' Product no.: 184100451
In stock
54.9 GBP 36 £54.90 *
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Ensure your rifle's chamber is safe with the Clymer 7.62x39mm No-Go Gauge. 🔧 Perfect for accurate measurements and testing!
CLYMER NO GO 7.62X39MM HEADSPACE GAUGE STEEL
54.9 GBP 23 £54.90 *
Cartridge: 7.62 x 39 mm Russian Height: 0.4'' Length: 1.495'' Model Number: NO GO 7.62x39mm Weight: 0.1 lbs Width: 0.4'' Product no.: 184100491
In stock
54.9 GBP 23 £54.90 *
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Ensure precision with the CLYMER 7.62x54R No-Go Gauge 🔧 for your firearms. Perfect for Russian cartridges and reliable performance!
CLYMER NO GO 7.62X54R HEADSPACE GAUGE STEEL
54.9 GBP 33 £54.90 *
Cartridge: 7.62 x 54 mm Russian Height: 0.47'' Length: 0.73'' Model Number: NO GO 7.62x54R Weight: 0.1 lbs Width: 0.47'' Product no.: 184100501
In stock
54.9 GBP 33 £54.90 *
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Ensure a safe chamber with the Clymer No-Go Gauge for 12 Gauge rifles. 🛠️ Perfect for testing used guns and new barrels!
CLYMER NO GO 12 GA HEADSPACE GAUGE STEEL
79.9 GBP 2 £79.90 *
Cartridge: 12 Gauge Height: 0.788'' Length: 1.26'' Model Number: NO GO 12 Ga Weight: 0.2 lbs Width: 0.788'' Product no.: 184110121
In stock
79.9 GBP 2 £79.90 *
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Ensure a safe chamber with the Clymer 20 Gauge No-Go Gauge. 🛠️ Perfect for accurate headspace measurement and testing!
CLYMER NO GO 20 GA HEADSPACE GAUGE STEEL
79.9 GBP 10 £79.90 *
Cartridge: 20 Gauge Height: 0.68'' Length: 1.25'' Model Number: NO GO 20 Ga Weight: 0.2 lbs Width: 0.68'' Product no.: 184110201
In stock
79.9 GBP 10 £79.90 *
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Ensure precision with the CLYMER No-Go Gauge for .204 Ruger 🔧. Perfect for your headspace measurements and cartridge compatibility!
CLYMER NO GO 204 RUGER HEADSPACE GAUGE STEEL
54.9 GBP 23 £54.90 *
Cartridge: 204 Ruger Height: 0.355'' Length: 1.686'' Model Number: NO GO 204 Ruger Weight: 0.1 lbs Width: 0.355'' Product no.: 184000034
In stock
54.9 GBP 23 £54.90 *
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Ensure your rifle's chamber is safe and accurate with the Clymer 5.56mm NATO No-Go Gauge. 🛠️ Perfect for new barrels and used guns!
CLYMER NO GO 5.56X45MM NATO HEADSPACE GAUGE STEEL
54.9 GBP 113 £54.90 *
Cartridge: 5.56 mm NATO Height: 0.355'' Length: 1.623'' Model Number: NO GO 5.56x45mm NATO Weight: 0.1 lbs Width: 0.355'' Product no.: 184000036
In stock
54.9 GBP 113 £54.90 *
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Ensure a safe chamber with the Clymer 300 AAC Blackout No-Go Gauge. 🛠️ Perfect for checking headspace before firing used guns!
CLYMER NO GO 300 AAC BLACKOUT HEADSPACE GAUGE STEEL
54.9 GBP 37 £54.90 *
Cartridge: 300 AAC Blackout Height: 0.365'' Length: 1.287'' Model Number: NO GO 300 AAC Blackout Weight: 0.1 lbs Width: 0.365'' Product no.: 100011311
In stock
54.9 GBP 37 £54.90 *
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Ensure a safe chamber with the HEADSPACE GAUGES - NO-GO CLYMER 224 VALKYRIE. 🔍 Perfect for accurate measurement and testing!
CLYMER NO GO 224 VALYRIE HEADSPACE GAUGE STEEL
54.9 GBP 9 £54.90 *
Cartridge: 224 Valkyrie Height: 0.415'' Length: 1.37'' Model Number: NO GO 224 Valkyrie Weight: 0.1 lbs Width: 0.415'' Product no.: 184000078
In stock
54.9 GBP 9 £54.90 *
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Ensure a safe chamber with the CLYMER 6.5mm Creedmoor No-Go Gauge. 🔧 Perfect for checking headspace on used guns!
CLYMER NO GO 6.5MM CREEDMOOR HEADSPACE GAUGE STEEL
54.9 GBP 0 £54.90 *
Cartridge: 6.5 Creedmoor, 6mm Creedmoor, 22 Creedmoor Height: 0.465'' Length: 1.7'' Model Number: NO GO 6.5mm Creedmoor Weight: 0.1 lbs Width: 0.465'' Product no.: 184000080
Backorderable
54.9 GBP 0 £54.90 *
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Ensure a safe chamber with the Clymer No-Go Gauge for 221 Remington Fireball. 🛠️ Perfect for new barrels and used gun checks!
CLYMER NO GO 221 REMINGTON FIREBALL HEADSPACE GAUGE STEEL
Cartridge: 221 Remington Fireball Height: 0.68'' Length: 1.25'' Model Number: NO GO 221 Remington Fireball Weight: 0.02 lbs Width: 0.68'' Product no.: 184100219
Not available
36.9 GBP 0 £36.90 *
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Ensure a safe chamber with the CLYMER No-Go Gauge for 22 Hornet 🔍. Perfect for checking used guns or chambering new barrels.
CLYMER 22 HORNET NO-GO GAUGE
Cartridge: 22 Hornet, 17 Hornet Model Number: 22 Hornet NO GO Product no.: 184100236
Not available
45.9 GBP 0 £45.90 *
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Ensure your rifle's chamber is safe with the Clymer No-Go Gauge for 250 Savage. 🛠️ Accurate measurement for a reliable shooting experience!
CLYMER 250 SAVAGE NO-GO GAUGE
Cartridge: 250 Savage Model Number: 250 Savage NO GO Product no.: 184100256
Not available
48.9 GBP 0 £48.90 *
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Ensure precision with the Clymer 300 Savage No-Go Gauge. 🛠️ Perfect for checking headspace before firing your rifle!
CLYMER NO GO 300 SAVAGE HEADSPACE GAUGE STEEL
Cartridge: 300 Savage Height: 0.68'' Length: 1.25'' Model Number: NO GO 300 Savage Weight: 0.02 lbs Width: 0.68'' Product no.: 184100266
Not available
36.9 GBP 0 £36.90 *
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Ensure precision with the CLYMER No-Go Gauge for .40 S&W. 🛠️ Perfect for your firearm needs!
CLYMER NO GO 40 S&W HEADSPACE GAUGE STEEL
Cartridge: 40 S&W Height: 0.68'' Length: 1.25'' Model Number: NO GO 40 S&W Weight: 0.02 lbs Width: 0.68'' Product no.: 184100401
Not available
36.9 GBP 0 £36.90 *
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Ensure your rifle's safety with the CLYMER No-Go Gauge for 45 Long Colt. 🛠️ Accurate measurement for a perfect chamber fit!
CLYMER 45 LONG COLT NO-GO GAUGE
Cartridge: 45 (Long) Colt Product no.: 184100511
Not available
45.9 GBP 0 £45.90 *
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Ensure precision with the CLYMER .410 No-Go Gauge 🔧. Perfect for shotgun enthusiasts looking for reliability and accuracy.
CLYMER 410 BORE NO-GO GAUGE
Cartridge: .410 Bore Model Number: 410 Bore NO GO Product no.: 184110411
Not available
54.9 GBP 0 £54.90 *
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54.9 79.9 38 GBP
64.9 GBP £64.90

Prices inclusive of duty & VAT.

Product no.: 184100307

Mfr. No.: NG300REMUMAG

CLYMER NO-GO HEADSPACE GAUGES The Clymer No-Go Headspace Gauges are precision tools designed to help gunsmiths and firearm enthusiasts verify that a firearm's chamber does not exceed the maximum safe headspace dimensions. By identifying excessive chamber length, these gauges prevent potential safety hazards such as case ruptures or misfires, ensuring the firearm operates within the specified tolerances. They are essential during the chambering of new barrels, routine maintenance, or when assessing used firearms for purchase. Key Features: Precision Machining: Each gauge is crafted from high-quality steel and machined to exact SAAMI specifications, ensuring accurate and reliable measurements. Caliber Specificity: Available in a wide range of calibers, these gauges cater to various firearm types, providing versatility for gunsmiths working with multiple platforms. Durable Construction: Built to withstand repeated use, the hardened steel construction ensures longevity and consistent performance in demanding workshop environments. Specifications: Material: Hardened steel Dimensions: Size varies with caliber and gauge style Compliance: Manufactured to SAAMI specifications Customer Insights: Customers value the Clymer No-Go Headspace Gauges for their precision and reliability. The accurate machining and adherence to industry standards provide confidence during firearm assembly and inspection processes. Users appreciate the wide range of available calibers, allowing them to select the appropriate gauge for their specific needs. The durable construction is frequently highlighted, with many noting that the gauges maintain their accuracy even after extensive use. Incorporating the Clymer No-Go Headspace Gauges into your gunsmithing toolkit ensures that your firearm chambers are within safe operational limits, enhancing both safety and performance.
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Variations:

Ensure a safe chamber with the HEADSPACE GAUGES - No-Go Clymer 300 Remington Ultra Magnum. 🔧 Perfect for accurate rifle testing!
CLYMER NO GO 300 REMINGTON ULTRA MAGNUM HEADSPACE GAUGE STEEL
64.9 GBP 41 £64.90 *
Cartridge: 300 Remington Ultra Magnum, 7 mm Remington Ultra Magnum, 375 Remington Ultra Magnum Height: 0.52'' Length: 2.618'' Model Number: NO GO 300 Remington Ultra Magnum Weight: 0.2 lbs Width: 0.52'' Product no.: 184100307
In stock
64.9 GBP 41 £64.90 *
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Ensure safe chambering with the HEADSPACE GAUGES - NO-GO CLYMER 22 Long Rifle gauge. 🔍 Perfect for accurate measurements and checks!
CLYMER NO GO 22 LONG RIFLE HEADSPACE GAUGE STEEL
54.9 GBP 5 £54.90 *
Cartridge: 22 Long Rifle, 22 Short, 22 Long, 22 Bentz, 22 Match Height: 0.284'' Length: 0.75'' Model Number: NO GO 22 Long Rifle Weight: 0.1 lbs Width: 0.284'' Product no.: 184100221
In stock
54.9 GBP 5 £54.90 *
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Ensure a safe chamber with the HEADSPACE GAUGES - NO-GO CLYMER 6MM BR. 🛠️ Perfect for accurate measurement and testing!
CLYMER NO GO 6MM BR HEADSPACE GAUGE STEEL
59.9 GBP 12 £59.90 *
Cartridge: 6 mm BR Norma, 7 mm BR (Benchrest) Remington, 22 BR (Benchrest) Remington Height: 0.46'' Length: 1.317'' Model Number: NO GO 6mm BR Weight: 0.1 lbs Width: 0.46'' Product no.: 184100223
In stock
59.9 GBP 12 £59.90 *
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Ensure precision with the CLYMER No-Go Gauge for .22 Rimfire Mag 🔍. Perfect for 17 HMR, 22 WRF, and 22 RF cartridges!
CLYMER NO GO 22 WRF HEADSPACE GAUGE STEEL
54.9 GBP 12 £54.90 *
Cartridge: 17 HMR, 22 WRF, 22 RF Height: 0.284'' Length: 0.75'' Model Number: NO GO 22 WRF Weight: 0.1 lbs Width: 0.284'' Product no.: 184100231
In stock
54.9 GBP 12 £54.90 *
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Ensure safe and accurate chambering with the Clymer 223 Remington No-Go Gauge. Perfect for checking headspace! 🔍
CLYMER NO GO 223 REMINGTON HEADSPACE GAUGE STEEL
54.9 GBP 23 £54.90 *
Cartridge: 223 Remington, 6 mm x 45 Height: 0.355'' Length: 1.623'' Model Number: NO GO 223 Remington Weight: 0.1 lbs Width: 0.355'' Product no.: 184100241
In stock
54.9 GBP 23 £54.90 *
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Ensure precision with the CLYMER No-Go Gauge for .22-250 Remington. 🔧 Perfect for reliable headspace measurements!
CLYMER NO GO 22-250 REMINGTON HEADSPACE GAUGE STEEL
54.9 GBP 13 £54.90 *
Cartridge: 22-250 Remington Height: 0.405'' Length: 1.733'' Model Number: NO GO 22-250 Remington Weight: 0.1 lbs Width: 0.405'' Product no.: 184100251
In stock
54.9 GBP 13 £54.90 *
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Ensure precision with Clymer's No-Go Gauge for .308 Winchester and more! 🔧 Perfect for your reloading needs.
CLYMER NO GO 308 WINCHESTER FAMILY HEADSPACE GAUGE STEEL
54.9 GBP 9 £54.90 *
Cartridge: 308 Winchester, 243 Winchester, 7 mm - 08 Remington, 358 Winchester, 260 Remington Height: 0.455'' Length: 1.895'' Model Number: NO GO 308 Winchester Family Weight: 0.1 lbs Width: 0.455'' Product no.: 184100261
In stock
54.9 GBP 9 £54.90 *
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Ensure a safe chamber with the CLYMER No-Go Gauge for 300 WSM rifles. Essential for accuracy and safety! 🔍 Check your headspace today!
CLYMER NO GO 300 WSM HEADSPACE GAUGE STEEL
64.9 GBP 3 £64.90 *
Cartridge: 300 WSM (Winchester Short Mag), 270 WSM (Winchester Short Mag), 338 Winchester Magnum, 325 WSM (Winchester Short Mag) Height: 0.53'' Length: 1.885'' Model Number: NO GO 300 WSM Weight: 0.2 lbs Width: 0.53'' Product no.: 184100264
In stock
64.9 GBP 3 £64.90 *
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Ensure precision with the CLYMER 7x57mm Mauser No-Go Gauge. Perfect for .257 Roberts and 7mm Mauser cartridges. 🛠️ Get yours today!
CLYMER NO GO 7X57MM MAUSER HEADSPACE GAUGE STEEL
54.9 GBP 15 £54.90 *
Cartridge: 257 Roberts, 7 mm Mauser (7 x 57 mm Mauser) Height: 0.43'' Length: 1.952'' Model Number: NO GO 7x57mm Mauser Weight: 0.1 lbs Width: 0.43'' Product no.: 184100281
In stock
54.9 GBP 15 £54.90 *
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Ensure precision with the CLYMER No-Go Gauge for 6.5x55mm Swedish Mauser. 🛠️ Perfect for your firearm needs!
CLYMER NO GO 6.5X55MM SWEDE HEADSPACE GAUGE STEEL
54.9 GBP 10 £54.90 *
Cartridge: 6.5 x 55 mm Swedish Mauser Height: 0.43'' Length: 1.952'' Model Number: NO GO 6.5x55mm Swedish Mauser Weight: 0.1 lbs Width: 0.43'' Product no.: 184100291
In stock
54.9 GBP 10 £54.90 *
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Ensure precision with the CLYMER No-Go Gauge for .30/30 Winchester 🔧. Perfect for various cartridges, it's a must-have for every gunsmith!
CLYMER NO GO 30-30 WINCHESTER HEADSPACE GAUGE STEEL
54.9 GBP 4 £54.90 *
Cartridge: 30-30 Winchester, 375 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 Height: 0.4'' Length: 0.73'' Model Number: 30-30 Winchester NO GO Weight: 0.1 lbs Width: 0.4'' Product no.: 184100301
In stock
54.9 GBP 4 £54.90 *
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Ensure precision with the CLYMER No-Go Gauge for .30-40 Krag 🔧. Ideal for gunsmiths and enthusiasts alike!
CLYMER NO GO 30-40 KRAG HEADSPACE GAUGE STEEL
54.9 GBP 10 £54.90 *
Cartridge: 30-40 Krag, 303 British Height: 0.44'' Length: 0.73'' Model Number: NO GO 30-40 Krag Weight: 0.1 lbs Width: 0.44'' Product no.: 184100303
In stock
54.9 GBP 10 £54.90 *
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Ensure a safe chamber with the HEADSPACE GAUGES - NO-GO CLYMER 30-06. Perfect for testing used guns and new barrels! 🔍
CLYMER NO GO 30-06 SPRINGFIELD HEADSPACE GAUGE STEEL
54.9 GBP 17 £54.90 *
Cartridge: 30-06 Springfield, 270 Winchester, 25-06 Remington, 338-06, 35 Whelen, 6.5-06, 8 mm-06 Height: 0.445'' Length: 2.291'' Model Number: NO GO 30-06 Springfield Weight: 0.2 lbs Width: 0.445'' Product no.: 184100311
In stock
54.9 GBP 17 £54.90 *
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Ensure a safe chamber with the Clymer No-Go Gauge for 300 Win Mag & more. 🛠️ Perfect for testing used guns and new barrels!
CLYMER NO GO BELTED MAGNUM HEADSPACE GAUGE STEEL
64.9 GBP 11 £64.90 *
Cartridge: 300 Winchester Magnum, 375 H&H Magnum, 350 Remington Mag Height: 0.48'' Length: 0.94'' Model Number: NO GO Belted Magnum Weight: 0.1 lbs Width: 0.48'' Product no.: 184100321
In stock
64.9 GBP 11 £64.90 *
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Ensure safety with the Clymer No-Go Gauge for 45-70 Government rifles. 🛠️ Perfect for checking headspace before firing!
CLYMER NO GO 45-70 GOVERNMENT HEADSPACE GAUGE STEEL
54.9 GBP 13 £54.90 *
Cartridge: 45-70 Government, 348 Winchester, 33 WCF, 40-65 Winchester Height: 0.495'' Length: 0.73'' Model Number: NO GO 45-70 Government Weight: 0.1 lbs Width: 0.495'' Product no.: 184100331
In stock
54.9 GBP 13 £54.90 *
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Ensure safe chambering with the Clymer 9mm Luger No-Go Gauge. 🔧 Perfect for checking headspace on used guns!
CLYMER NO GO 9MM LUGER HEADSPACE GAUGE STEEL
54.9 GBP 22 £54.90 *
Cartridge: 9 mm Luger Height: 0.375'' Length: 0.786'' Model Number: NO GO 9mm Luger Weight: 0.1 lbs Width: 0.375'' Product no.: 184100341
In stock
54.9 GBP 22 £54.90 *
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Ensure a safe chamber with the Clymer No-Go Gauge for 30 M1 Carbine. 🛠️ Perfect for checking headspace on used guns!
CLYMER NO GO 30 M1 CARBINE HEADSPACE GAUGE STEEL
54.9 GBP 14 £54.90 *
Cartridge: 30 Carbine Height: 0.335'' Length: 1.3'' Model Number: NO GO 30 M1 Carbine Weight: 0.1 lbs Width: 0.335'' Product no.: 184100351
In stock
54.9 GBP 14 £54.90 *
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Ensure a safe chamber with the Clymer No-Go Gauge for 25-20 Winchester. 🛠️ Perfect for checking used guns and chambering new barrels!
CLYMER NO GO 25-20 WINCHESTER HEADSPACE GAUGE STEEL
54.9 GBP 17 £54.90 *
Cartridge: 218 Bee, 25-20 Winchester, 32-20 Winchester, 218 Mashburn Bee Height: 0.325'' Length: 0.73'' Model Number: NO GO 25-20 Winchester Weight: 0.1 lbs Width: 0.325'' Product no.: 184100361
In stock
54.9 GBP 17 £54.90 *
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Ensure your rifle's safety with the CLYMER 357 Magnum No-Go Gauge. 🛠️ Perfect for checking headspace before firing!
CLYMER NO GO 357 MAGNUM HEADSPACE GAUGE STEEL
54.9 GBP 1 £54.90 *
Cartridge: 357 Magnum, 38 Special Height: 0.375'' Length: 0.73'' Model Number: NO GO 357 Magnum Weight: 0.1 lbs Width: 0.375'' Product no.: 184100381
In stock
54.9 GBP 1 £54.90 *
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Ensure a safe chamber with the Clymer 38 Super No-Go Gauge. 🛠️ Perfect for checking used guns and chambering new barrels!
CLYMER NO GO 38 SUPER HEADSPACE GAUGE STEEL
54.9 GBP 2 £54.90 *
Cartridge: 38 Super Height: 0.38'' Length: 0.93'' Model Number: NO GO 38 Super Weight: 0.1 lbs Width: 0.38'' Product no.: 184100391
In stock
54.9 GBP 2 £54.90 *
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Ensure precision with the CLYMER No-Go Gauge for .44 Magnum 🔧. Ideal for accurate firearm measurements and compatibility.
CLYMER NO GO 44 MAGNUM HEADSPACE GAUGE STEEL
54.9 GBP 2 £54.90 *
Cartridge: 44 Magnum, 44 Special Height: 0.45'' Length: 0.73'' Model Number: NO GO 44 Magnum Weight: 0.1 lbs Width: 0.45'' Product no.: 184100431
In stock
54.9 GBP 2 £54.90 *
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Ensure safe chambering with the Clymer 45 ACP No-Go Gauge. 🔍 Accurate measurements for used guns and new barrels. Check headspace before firing!
CLYMER NO GO 45 ACP HEADSPACE GAUGE STEEL
54.9 GBP 36 £54.90 *
Cartridge: 45 Auto (ACP) Height: 0.47'' Length: 0.93'' Model Number: NO GO 45 ACP Weight: 0.1 lbs Width: 0.47'' Product no.: 184100451
In stock
54.9 GBP 36 £54.90 *
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Ensure your rifle's chamber is safe with the Clymer 7.62x39mm No-Go Gauge. 🔧 Perfect for accurate measurements and testing!
CLYMER NO GO 7.62X39MM HEADSPACE GAUGE STEEL
54.9 GBP 23 £54.90 *
Cartridge: 7.62 x 39 mm Russian Height: 0.4'' Length: 1.495'' Model Number: NO GO 7.62x39mm Weight: 0.1 lbs Width: 0.4'' Product no.: 184100491
In stock
54.9 GBP 23 £54.90 *
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Ensure precision with the CLYMER 7.62x54R No-Go Gauge 🔧 for your firearms. Perfect for Russian cartridges and reliable performance!
CLYMER NO GO 7.62X54R HEADSPACE GAUGE STEEL
54.9 GBP 33 £54.90 *
Cartridge: 7.62 x 54 mm Russian Height: 0.47'' Length: 0.73'' Model Number: NO GO 7.62x54R Weight: 0.1 lbs Width: 0.47'' Product no.: 184100501
In stock
54.9 GBP 33 £54.90 *
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Ensure a safe chamber with the Clymer No-Go Gauge for 12 Gauge rifles. 🛠️ Perfect for testing used guns and new barrels!
CLYMER NO GO 12 GA HEADSPACE GAUGE STEEL
79.9 GBP 2 £79.90 *
Cartridge: 12 Gauge Height: 0.788'' Length: 1.26'' Model Number: NO GO 12 Ga Weight: 0.2 lbs Width: 0.788'' Product no.: 184110121
In stock
79.9 GBP 2 £79.90 *
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Ensure a safe chamber with the Clymer 20 Gauge No-Go Gauge. 🛠️ Perfect for accurate headspace measurement and testing!
CLYMER NO GO 20 GA HEADSPACE GAUGE STEEL
79.9 GBP 10 £79.90 *
Cartridge: 20 Gauge Height: 0.68'' Length: 1.25'' Model Number: NO GO 20 Ga Weight: 0.2 lbs Width: 0.68'' Product no.: 184110201
In stock
79.9 GBP 10 £79.90 *
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Ensure precision with the CLYMER No-Go Gauge for .204 Ruger 🔧. Perfect for your headspace measurements and cartridge compatibility!
CLYMER NO GO 204 RUGER HEADSPACE GAUGE STEEL
54.9 GBP 23 £54.90 *
Cartridge: 204 Ruger Height: 0.355'' Length: 1.686'' Model Number: NO GO 204 Ruger Weight: 0.1 lbs Width: 0.355'' Product no.: 184000034
In stock
54.9 GBP 23 £54.90 *
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Ensure your rifle's chamber is safe and accurate with the Clymer 5.56mm NATO No-Go Gauge. 🛠️ Perfect for new barrels and used guns!
CLYMER NO GO 5.56X45MM NATO HEADSPACE GAUGE STEEL
54.9 GBP 113 £54.90 *
Cartridge: 5.56 mm NATO Height: 0.355'' Length: 1.623'' Model Number: NO GO 5.56x45mm NATO Weight: 0.1 lbs Width: 0.355'' Product no.: 184000036
In stock
54.9 GBP 113 £54.90 *
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Ensure a safe chamber with the Clymer 300 AAC Blackout No-Go Gauge. 🛠️ Perfect for checking headspace before firing used guns!
CLYMER NO GO 300 AAC BLACKOUT HEADSPACE GAUGE STEEL
54.9 GBP 37 £54.90 *
Cartridge: 300 AAC Blackout Height: 0.365'' Length: 1.287'' Model Number: NO GO 300 AAC Blackout Weight: 0.1 lbs Width: 0.365'' Product no.: 100011311
In stock
54.9 GBP 37 £54.90 *
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Ensure a safe chamber with the HEADSPACE GAUGES - NO-GO CLYMER 224 VALKYRIE. 🔍 Perfect for accurate measurement and testing!
CLYMER NO GO 224 VALYRIE HEADSPACE GAUGE STEEL
54.9 GBP 9 £54.90 *
Cartridge: 224 Valkyrie Height: 0.415'' Length: 1.37'' Model Number: NO GO 224 Valkyrie Weight: 0.1 lbs Width: 0.415'' Product no.: 184000078
In stock
54.9 GBP 9 £54.90 *
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Ensure a safe chamber with the CLYMER 6.5mm Creedmoor No-Go Gauge. 🔧 Perfect for checking headspace on used guns!
CLYMER NO GO 6.5MM CREEDMOOR HEADSPACE GAUGE STEEL
54.9 GBP 0 £54.90 *
Cartridge: 6.5 Creedmoor, 6mm Creedmoor, 22 Creedmoor Height: 0.465'' Length: 1.7'' Model Number: NO GO 6.5mm Creedmoor Weight: 0.1 lbs Width: 0.465'' Product no.: 184000080
Backorderable
54.9 GBP 0 £54.90 *
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Ensure a safe chamber with the Clymer No-Go Gauge for 221 Remington Fireball. 🛠️ Perfect for new barrels and used gun checks!
CLYMER NO GO 221 REMINGTON FIREBALL HEADSPACE GAUGE STEEL
Cartridge: 221 Remington Fireball Height: 0.68'' Length: 1.25'' Model Number: NO GO 221 Remington Fireball Weight: 0.02 lbs Width: 0.68'' Product no.: 184100219
Not available
36.9 GBP 0 £36.90 *
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Ensure a safe chamber with the CLYMER No-Go Gauge for 22 Hornet 🔍. Perfect for checking used guns or chambering new barrels.
CLYMER 22 HORNET NO-GO GAUGE
Cartridge: 22 Hornet, 17 Hornet Model Number: 22 Hornet NO GO Product no.: 184100236
Not available
45.9 GBP 0 £45.90 *
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Ensure your rifle's chamber is safe with the Clymer No-Go Gauge for 250 Savage. 🛠️ Accurate measurement for a reliable shooting experience!
CLYMER 250 SAVAGE NO-GO GAUGE
Cartridge: 250 Savage Model Number: 250 Savage NO GO Product no.: 184100256
Not available
48.9 GBP 0 £48.90 *
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Ensure precision with the Clymer 300 Savage No-Go Gauge. 🛠️ Perfect for checking headspace before firing your rifle!
CLYMER NO GO 300 SAVAGE HEADSPACE GAUGE STEEL
Cartridge: 300 Savage Height: 0.68'' Length: 1.25'' Model Number: NO GO 300 Savage Weight: 0.02 lbs Width: 0.68'' Product no.: 184100266
Not available
36.9 GBP 0 £36.90 *
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Ensure precision with the CLYMER No-Go Gauge for .40 S&W. 🛠️ Perfect for your firearm needs!
CLYMER NO GO 40 S&W HEADSPACE GAUGE STEEL
Cartridge: 40 S&W Height: 0.68'' Length: 1.25'' Model Number: NO GO 40 S&W Weight: 0.02 lbs Width: 0.68'' Product no.: 184100401
Not available
36.9 GBP 0 £36.90 *
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Ensure your rifle's safety with the CLYMER No-Go Gauge for 45 Long Colt. 🛠️ Accurate measurement for a perfect chamber fit!
CLYMER 45 LONG COLT NO-GO GAUGE
Cartridge: 45 (Long) Colt Product no.: 184100511
Not available
45.9 GBP 0 £45.90 *
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Ensure precision with the CLYMER .410 No-Go Gauge 🔧. Perfect for shotgun enthusiasts looking for reliability and accuracy.
CLYMER 410 BORE NO-GO GAUGE
Cartridge: .410 Bore Model Number: 410 Bore NO GO Product no.: 184110411
Not available
54.9 GBP 0 £54.90 *
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Description:

Absolutely Essential For Accurate, Safe, Chamber Work
CLYMER NO-GO HEADSPACE GAUGES The Clymer No-Go Headspace Gauges are precision tools designed to help gunsmiths and firearm enthusiasts verify that a firearm's chamber does not exceed the maximum safe headspace dimensions. By identifying excessive chamber length, these gauges prevent potential safety hazards such as case ruptures or misfires, ensuring the firearm operates within the specified tolerances. They are essential during the chambering of new barrels, routine maintenance, or when assessing used firearms for purchase. Key Features: Precision Machining: Each gauge is crafted from high-quality steel and machined to exact SAAMI specifications, ensuring accurate and reliable measurements. Caliber Specificity: Available in a wide range of calibers, these gauges cater to various firearm types, providing versatility for gunsmiths working with multiple platforms. Durable Construction: Built to withstand repeated use, the hardened steel construction ensures longevity and consistent performance in demanding workshop environments. Specifications: Material: Hardened steel Dimensions: Size varies with caliber and gauge style Compliance: Manufactured to SAAMI specifications Customer Insights: Customers value the Clymer No-Go Headspace Gauges for their precision and reliability. The accurate machining and adherence to industry standards provide confidence during firearm assembly and inspection processes. Users appreciate the wide range of available calibers, allowing them to select the appropriate gauge for their specific needs. The durable construction is frequently highlighted, with many noting that the gauges maintain their accuracy even after extensive use. Incorporating the Clymer No-Go Headspace Gauges into your gunsmithing toolkit ensures that your firearm chambers are within safe operational limits, enhancing both safety and performance.  

Top takeaways

  1. The Clymer No-Go Gauge is essential for checking the chamber length of rifles for safety and accuracy, particularly when fitting a new barrel or purchasing a used firearm.
  2. These gauges are etched with "No-Go" and the caliber name, and are made to SAAMI specs to fit a range of cartridges including the 300 Remington Ultra Magnum.
  3. Clymer's machined steel gauges are interchangeable among various calibers within the same Stock #, ensuring versatility and ease of use for different firearms.

Attributes

  • Cartridge: 300 Remington Ultra Magnum,7 mm Remington Ultra Magnum,375 Remington Ultra Magnum
  • Colour: Steel
  • Height: 0.52''
  • Length: 2.618''
  • Material: Steel
  • Model Number: NO GO 300 Remington Ultra Magnum
  • Style: No Go Gauge
  • Weight: 0.2 lbs
  • Width: 0.52''
  • Delivery weight: 0.136kg
  • Shipping height: 20mm
  • Shipping width: 23mm
  • Shipping length: 79mm

Item details

Made in USA

Customers reviews

Customer ratings (6)

4.8 / 5
Definitely recommended

Brownells USA I used this to check Colt SAA 1st Gen 14/07/2018

1st Gen Colt SAA checked out OK with this gauge. Works as advertised. Had to remove cylinder to get the gauge out, since it would not rotate into recoil plate.















Definitely recommended

Brownells USA Works 30/03/2017

Works as advertized.

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