Forster Headspace Go Gauge for 300 Rimmed and Belted Mag # BG300MN

Product Description

Rimmed and Belted Headspace Gage, GO Length

BG300MG

NEW!!

Use to check all standard belted Mags with .535″ O.D.: 257 Wby., 257 STW, 264 Win., 6.5 STW, 6.5 Rem. Mag, 270 Wby., 275 H&H, 7mm Rem. Mag, 7mm Wby Mag, 300 H&H, 300 Wby., 300 Win. Mag, 30-338 Win. Mag, 308 Norma Mag, 338 Win. Mag, 8mm Rem. Mag, 340 Wby., 350 Rem. Mag, 358 STA, 375 H&H, 416 Rem., & 458 Win. Mag.

Forster Products manufactures precision headspace gauges to maximize safety and accuracy in your rifle.

These gauges are necessary when finish chambering a barrel, or when checking the chamber of a used gun to be sure the headspace dimensions are within safe limits.

Machined from A2 tool steel, these gauges are held to tolerances within 0.00015" to ensure accurate testing of your rifle's chamber.

Notes:
Headspace standards are set by SAAMI (Sporting Arms and Ammunition Manufacturers Institute) specifications.

Headspace is measured from the bolt face to one of four locations, depending on the cartridge used.

The measurement is taken from the rim of rimmed cases like the .30-30, or the shoulder of a necked case like the .30-06, the case mouth of a straight or tapered case like the 30 Carbine, or the belt of a belted case like the .300 Winchester Magnum.

Headspace gauges are available in three different lengths, listed below, from shortest to longest:

Go Gauge: Go Gauges match the minimum chamber dimensions allowable under SAAMI specifications.

In order to accept SAAMI maximum ammunition, the rifle must be able to chamber the correct go gauge.

Material: Steel

5 STAR REVIEWS:

"Accurate, easy to use, nice plastic storage case."

"Worked great on my Remington 700 Remage rebarrel."

"Another flawless result from a Forester product."