Forster Products Go Gauge Features The Forster Go Gauge is machined to precise SAAMI specifications confirming that a 284 Winchester chamber meets the minimum acceptable dimension for safe cartridge feeding and firing. When paired with a No-Go or Field gauge the Go Gauge lets a gunsmith fully assess whether a newly chambered barrel falls within safe and correct tolerances. The gauge is machined from hardened steel giving it the durability to withstand repeated insertions during a chambering job or inspection without losing accuracy. Its dimensions are specific to the 284 Winchester cartridge ensuring the measurement taken is relevant to that exact chambering. At 1.81 inches in length and a little over a tenth of a pound the Go Gauge is compact enough to carry in a gunsmithing kit alongside its No-Go and Field counterparts. Reliable headspace measurement is critical when chambering a new barrel since improper headspace can lead to feeding issues case ruptures or excessive wear on the action. This gauge gives gunsmiths and serious reloaders the confidence that their 284 Winchester chamber is cut to a safe correct specification. A dependable tool like this Forster Go Gauge belongs in any gunsmithing bench set up to work on rifle chambers. Forster Products Go Gauge Specifications Manufacturer: Forster Model: Go Gauge Caliber: 6mm-284 Win Type: Headspace Gauge Go Material: Steel Length: 1.81 Available At: GrabAGun