Brownells Brownells Brownells 75th Anniversary - A Shooting Heritage

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.


AR-15, Issue:10, Page:082
Big Book Catalog, Issue:67, Page:083
Big Book Catalog, Issue:67, Page:478
Law Enforcement / Police Store, Issue:08, Page:054
New Product Supplement, Issue:611, Page:017

SPECS: Machined Steel. Size varies with caliber and gauge style. NOTE: Gauges Interchangeable between calibers have same Stock #. .30/30 Cartridges are .219 Wasp, .219 Zipper, .22 Sav HP, .30-30, .32 Win Spl, .32-40, .375 Win and .38-55. .30/06 Cartridges are .25-06, 6.5mm-06, .270 Win, .30-06, 8mm-06, .338-06 and .35 Whelen. Magnum Cartridges are .257 Weatherby, .264 Win, 6.5 Rem Mag, .270 Weatherby, .275 H&H, 7mm Rem Mag, 7mm Weatherby, 7x61 S&H, .300 H&H, .300 Win Mag, .30-338, .300 Weatherby, .308 Norma, 8mm Mag, .338 Win, .340 Weatherby, .350 Rem Mag, .357 Norma, .375 H&H, .416 Rem Mag and .458 Win.

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Other Matches

22L4, 17HM2, 17HS NO GO HS GAUGE
184-100-221WB
NO GO, .17 HMR & .17HS, .22LR; Bentz, .22RF
184100221NO GO, .17 HMR & .17HS, .22LR; Bentz, .22RF

Mfr Part: NG22LR

$30.00

In Stock

Cartridge: 22 Long

Style: No Go Gauge

.204 RUGER NO GO HEADSPACE GAUGE
184-000-034WB
NO GO, .204 Ruger
184000034NO GO, .204 Ruger

Mfr Part: NG204RUGER

$29.00

In Stock

Cartridge: 204 Ruger

Style: No Go Gauge

22 RMF, 17HMR NO GO CLYMER HS GAUGE
184-100-231WB
NO GO, .22 Rimfire Mag, .22RFM
184100231NO GO, .22 Rimfire Mag, .22RFM

Mfr Part: NG22WRFM

$30.00

In Stock

Cartridge: 22 WMR, 22 WRF

Style: No Go Gauge

22 HORNET NO-GO HEADSPACE GAUGE
184-100-236WB
NO GO, .22 Hornet
184100236NO GO, .22 Hornet

Mfr Part: NG22HOR

$30.00

In Stock

Cartridge: 22 Hornet

Style: No Go Gauge

30/30 NO GO CLYMER HEADSPACE GAUGE
184-100-301WB
NO GO, .30/30 see Specs for Cartridges
184100301NO GO, .30/30 see Specs for Cartridges

Mfr Part: NG3030WCF

$30.00

In Stock

Cartridge: 30-30 Winchester

Style: No Go Gauge

221 FIREBALL NO GO CLYMER HEADSPACE GA
184-100-219WB
NO GO, .221 Fireball, .221 Rem
184100219NO GO, .221 Fireball, .221 Rem

Mfr Part: NG221REM

$29.00

In Stock

Cartridge: 221 Remington Fireball

Style: No Go Gauge

223 REM. NO GO CLYMER HEADSPACE GAUGE
184-100-241WB
NO GO, .223 Rem
184100241NO GO, .223 Rem

Mfr Part: NG223REM

$29.00

In Stock

Cartridge: 223 Remington

Style: No Go Gauge

5.56 NATO NO GO HEADSPACE GAUGE
184-000-036WB
NO GO, 5.56 NATO
184000036NO GO, 5.56 NATO

Mfr Part: NG556NATO

$33.00

In Stock

Cartridge: 5.56 mm NATO

Style: No Go Gauge

22/250 NO GO CLYMER HEADSPACE GAUGE
184-100-251WB
NO GO, .22-250
184100251NO GO, .22-250

Mfr Part: NG22250

$29.00

In Stock

Cartridge: 22-250 Remington

Style: No Go Gauge

308 WIN NO GO CLYMER HEADSPACE GAUGE
184-100-261WB
NO GO, .243 win, .308 Win, .358 Win
184100261NO GO, .243 win, .308 Win, .358 Win

Mfr Part: NG308WIN

$29.00

In Stock

Cartridge: 243 Winchester, 308 Winchester, 358 Winchester

Style: No Go Gauge

.25-20 NO GO CLYMER H'SPACE GAUGE
184-100-361WB
NO GO, .25/.20, .32-20
184100361NO GO, .25/.20, .32-20

Mfr Part: NG2520

$30.00

In Stock

Style: No Go Gauge

250 SAVAGE NO GO HEADSPACE GAUGE
184-100-256WB
NO GO, .250 Savage
184100256NO GO, .250 Savage

Mfr Part: NG250SAV

$29.00

In Stock

Cartridge: 250 Savage

Style: No Go Gauge

30-06 NO GO CLYMER HEADSPACE GAUGE
184-100-311WB
NO GO, .30-06 See Specs for Cartridges
184100311NO GO, .30-06 See Specs for Cartridges

Mfr Part: NG3006SPR

$29.00

In Stock

Cartridge: 30-06 Springfield

Style: No Go Gauge

MAGNUM NO GO CLYMER HEADSPACE GAUGE
184-100-321WB
NO GO, Magnum See Specs for Cartridges
184100321NO GO, Magnum See Specs for Cartridges

Mfr Part: NGBLT

$30.00

In Stock

Style: No Go Gauge

6.5X55 NO GO CLYMER HEADSPACE GAUGE
184-100-291WB
NO GO, 6.5x555
184100291NO GO, 6.5x555

Mfr Part: NG6555

$29.00

In Stock

Cartridge: 6.5 x 55 mm Swedish Mauser

Style: No Go Gauge

7X57 NO GO CLYMER HEADSPACE GAUGE
184-100-281WB
NO GO, .257 Roberts; 7x57
184100281NO GO, .257 Roberts; 7x57

Mfr Part: NG757

$29.00

In Stock

Cartridge: 7 mm Mauser (7 x 57 mm Mauser)

Style: No Go Gauge

22 REM BR/6MM REM BR/7MM BR NO GO HS G
184-100-223WB
NO GO, .22 Rem BR, 6mm BR, 7mm BR
184100223NO GO, .22 Rem BR, 6mm BR, 7mm BR

Mfr Part: NGBR

$29.00

In Stock

Cartridge: 22 BR (Benchrest) Remington, 6 mm BR Norma, 7 mm BR (Benchrest) Remington

Style: No Go Gauge

M-1 CARBINE NO-GO HEADSPACE GAUGE
184-100-351WB
NO GO, .30M1, .30 Carb
184100351NO GO, .30M1, .30 Carb

Mfr Part: NG30M1

$30.00

In Stock

Cartridge: 30 Carbine

Style: No Go Gauge

300 SAVAGE NO GO HEADSPACE GAUGE
184-100-266WB
NO GO, .300 Savage
184100266NO GO, .300 Savage

Mfr Part: NG300SAV

$29.00

In Stock

Cartridge: 300 Savage

Style: No Go Gauge

30/40 KRAG/303 BRITISH NO GO HS GA
184-100-303WB
NO GO, .30-40 Krag; .303 British
184100303NO GO, .30-40 Krag; .303 British

Mfr Part: NG3040KRAG

$30.00

In Stock

Cartridge: 303 British, 30-40 Krag

Style: No Go Gauge

300 NO GO REM ULTRA MAG HEADSPACE GA.
184-100-307WB
NO GO, .300 Ultra Mag, .300 Ultra
184100307NO GO, .300 Ultra Mag, .300 Ultra

Mfr Part: NOGO300UM

$29.00

In Stock

Cartridge: 300 Remington Ultra Magnum

Style: No Go Gauge

CLYMER 300 WIN SHORT MAG NO GO HS GA
184-100-264WB
NO GO, .300 Win Short Mag
184100264NO GO, .300 Win Short Mag

Mfr Part: NG300WSM

$29.00

In Stock

Cartridge: 300 WSM (Winchester Short Mag)

Style: No Go Gauge

7.62 X 39 NO GO RIMLESS H'SPACE GA
184-100-491WB
NO GO, 7.62x39 Russian Rimless
184100491NO GO, 7.62x39 Russian Rimless

Mfr Part: NG76239

$29.00

In Stock

Cartridge: 7.62 x 39 mm Russian

Style: No Go Gauge

7.62X54R RUSSIAN NO GO CLYMER HS GA
184-100-501WB
NO GO,, 7.62x54R Russian
184100501NO GO,, 7.62x54R Russian

Mfr Part: NG76254R

$30.00

In Stock

Cartridge: 7.62 x 54 mm Russian

Style: No Go Gauge

45/70 NO GO CLYMER HEADSPACE GAUGE
184-100-331WB
NO GO, .33 Win, .348 Win, .40-65, .45-70 Govt
184100331NO GO, .33 Win, .348 Win, .40-65, .45-70 Govt

Mfr Part: NG4570GOVT

$30.00

In Stock

Cartridge: 33 WCF, 348 Winchester, 40-65 Winchester, 45-70 Government

Style: No Go Gauge

444 MARLIN NO GO HEADSPACE GAUGE
184-100-336WB
NO GO, .444 Marlin
184100336NO GO, .444 Marlin

Mfr Part: NG444MAR

$25.00 $30.00

In Stock

Cartridge: 444 Marlin

Style: No Go Gauge

9MM LUGER NO GO CLYMER HEADSPACE GAUGE
184-100-341WB
NO GO, 9mm Luger
184100341NO GO, 9mm Luger

Mfr Part: NG9MMLUG

$30.00

In Stock

Cartridge: 9 mm Luger

Style: No Go Gauge

38 SUPER NONTE NO GO CLYMER HS GAUGE
184-100-391WB
NO GO, .38 Super (Nonte)
184100391NO GO, .38 Super (Nonte)

Mfr Part: NG38SUPN

$30.00

In Stock

Cartridge: 38 Super

Style: No Go Gauge

.357/.38 NO-GO CLYMER H'SPACE GAUGE
184-100-381WB
NO GO, .38 Spec, .357 Mag, .357 Max
184100381NO GO, .38 Spec, .357 Mag, .357 Max

Mfr Part: NG357MGN

$30.00

In Stock

Cartridge: 357 Magnum, 38 Special

Style: No Go Gauge

40 S&W NO GO CLYMER HEADSPACE GAUGE
184-100-401WB
NO GO, .40 S&W
184100401NO GO, .40 S&W

Mfr Part: NG40SW

$30.00

In Stock

Cartridge: 40 S&W

Style: No Go Gauge

44 SPL/MAG HEADSPACE GAUGE NO GO
184-100-431WB
NO Go, .44 Mag/.44 Spc
184100431NO Go, .44 Mag/.44 Spc

Mfr Part: NG44MGN

$30.00

In Stock

Cartridge: 44 Magnum, 44 Special

Style: No Go Gauge

45 ACP NO GO CLYMER HEADSPACE GAUGE
184-100-451WB
NO GO, .45 ACP
184100451NO GO, .45 ACP

Mfr Part: NG45ACP

$30.00

In Stock

Cartridge: 45 Auto (ACP)

Style: No Go Gauge

.45 COLT NO-GO CLYMER H'SPACE GAUGE
184-100-511WB
NO GO, .45 Colt
184100511NO GO, .45 Colt

Mfr Part: NG45LC

$30.00

Out of Stock View Alternatives

Cartridge: 45 (Long) Colt

Style: No Go Gauge

410 GA NO GO CLYMER SHOTGUN H'SPACE GA
184-110-411WB
NO GO, .410 Shotgun
184110411NO GO, .410 Shotgun

Mfr Part: NG410

$45.00

In Stock

Cartridge: .410 Bore

Style: No Go Gauge

20 GA. NO GO CLYMER SHOTGUN H'SPACE GA
184-110-201WB
NO GO, 20 Gauge
184110201NO GO, 20 Gauge

Mfr Part: NG20

$45.00

In Stock

Cartridge: 20 Gauge

Style: No Go Gauge

12 GA. NO GO CLYMER SHOTGUN H'SPACE GA
184-110-121WB
NO GO, 12 Gauge
184110121NO GO, 12 Gauge

Mfr Part: NG12

$45.00

In Stock

Cartridge: 12 Gauge

Style: No Go Gauge

300 BLACKOUT HEADSPACE GAUGE NO GO
100-011-311WB
NO GO, 300 Blackout
100011311NO GO, 300 Blackout

Mfr Part: NG300BLACK

$29.00

In Stock

Cartridge: 300 AAC Blackout

Style: No Go Gauge

CLYMER HEADSPACE GAUGES - NO-GO