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Determine Correct Headspace

Gives the proper chamber headspace dimensions so you know a firearm is safe to fire. GO gauge gives the SAMMI-recommended, minimum chamber depth. NO/GO is slightly longer than the SAMMI-recommended to identify excessive chamber depth and an unsafe condition. Precision-ground and hardened to provide long service life.

MIXING AND MATCHING BRANDS OF HEADSPACE GAUGES - Don't do it!! That's the short answer, here's why. It boils down to tolerance stacking. Each Headspace Gauge manufacturer works within a range specified by SAAMI. Manufacturer "A" may work at the high end of the range while Manufacturer "B's" gauges are in the middle of the tolerance range. Mixing the two could give an inaccurate reading. By sticking with one brand within a particular caliber, you will eliminate a variable. If you have a Forster, .308 GO gauge, get a Forster, .308 NO GO. Use Clymer with Clymer and Manson Precision with Manson Precision, etc. You can use any brand of headspace gauge with any other brand of chambering reamer. e.g. Forster Headspace Gauges with Clymer Reamers, Manson Precision Gauges with JGS Reamers, etc.


Big Book Catalog, Issue:67, Page:479
New Product Supplement, Issue:575, Page:010
SPECS: M7 high speed steel, in-the-white, hardened.
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6 Item(s)
MANSON 17 CAL. MACH 2 HS GAUGE GO
513-100-028WB
GO GAUGE, fits .17 HM2
513100028GO GAUGE, fits .17 HM2

$30.00

Out of Stock

Cartridge: 17 Mach 2

Style: Go Gauge

MANSON 17 CAL. MACH 2 HS GAUGE NO GO
513-100-029WB
NO GO GAUGE, fits .17 HM2
513100029NO GO GAUGE, fits .17 HM2

$30.00

Out of Stock

Cartridge: 17 Mach 2

Style: No Go Gauge

22LR/MATCH/BENTZ MANSON GO HS GAUGE
513-100-220WB
GO GAUGE, fits LR/Match/Bentz
513100220GO GAUGE, fits LR/Match/Bentz

Mfr Part: G022LR

$30.00

Out of Stock

Style: Go Gauge

22LR/MATCH/BENTZ MANSON NO GO HS GAUGE
513-100-221WB
NO GO GAUGE, fits LR/Match/Bentz
513100221NO GO GAUGE, fits LR/Match/Bentz

Mfr Part: NG22LR

$30.00

In Stock

Style: No Go Gauge

17 HRM/22 WIN RFM GO MANSON HS GAUGE
513-100-230WB
GO GAUGE, fits .17 HMR
513100230GO GAUGE, fits .17 HMR

Mfr Part: G022WRFM

$30.00

In Stock

Cartridge: 17 HMR

Style: Go Gauge

17 HMR/22 WIN RFM NO GO MANSON HS GAUG
513-100-231WB
NO GO GAUGE, fits .17 HMR
513100231NO GO GAUGE, fits .17 HMR

Mfr Part: NG22WRFM

$30.00

In Stock

Cartridge: 17 HMR

Style: No Go Gauge

.22 RIMFIRE CARTRIDGE HEADSPACE GAUGES