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Measures The Largest Safe Dimensions

Field gauges are essential tools for ensuring a safe chamber on used rifles. Slightly longer then a No-Go gauge, the Field gauge is used to measure the absolute maximum allowable, safe chamber headspace. If the bolt closes on a No-Go gauge, the Field gauge is used for an additional check. If the bolt then closes on the Field gauge, the rifle is considered unsafe to shoot, you’ll have to have the barrel set back and rechambered. Includes a durable, plastic storage case. Available for .308 and .30-06 caliber chamber lengths.


Big Book Catalog, Issue:68, Page:496

SPECS: Steel, precision machined to SAAMI specs. .308 fits .243, .260, 7mm-08, .308, .338 Federal, and .358 Win. .30-06 fits .25-06, .270 Win, .30-06, 8mm-06, .338-06, and .35 Whelen.

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.308 WINCHESTER FIELD GAUGE
184-000-045WB
.308 Field Gauge
184000045.308 Field Gauge

Mfr Part: FD308WIN

$29.00

Online Only
In Stock

Cartridge: 308 Winchester

Style: Field Gauge

30-06 SPRINGFIELD FIELD GAUGE
184-000-046WB
.30-06 Field Gauge
184000046.30-06 Field Gauge

Mfr Part: FD3006SPR

$29.00

Online Only
In Stock

Cartridge: 30-06 Springfield

Style: Field Gauge

FIELD HEADSPACE GAUGES