![]() ![]() However if your ammunition does not meet SAAMI Spec, you run the risk of malfunctions, and/or endangering the consumer. In the United States, ammunition sold to consumers is not required to conform to SAAMI guidelines, and companies are allowed to produce or import ammunition for commercial sale that do not meet SAAMI specs. Proprietary or Wildcat Cartridge – 50 Beowulf, 338 Spectre, 458 SOCOM.C.I.P Recognized Cartridge – Any ammunition sold in a C.I.P governed nation.308 Win, 6.5 Creedmoor, 7mm Remington Mag Time spent reviewing and adhering to cartridge dimensions will help ensure the ammunition doesn’t just function in few firearms but function in every firearm that adheres to the same specification.Ĭartridges generally fall into one of 4 categories listed below. However someone who is developing a load for the consumer market needs to spend a little more time reviewing the specs that govern that particular cartridge. For the vast majority of the time, this works just fine. Handloaders typically purchase a set of dies, look up the cartridge in a load manuel, and follow the recipe spelled out. Refer to our Compatible Headspace Gauge Chart below or ask your sales representative if your gauge is cross-compatible.Whenever a handloader or an ammunition manufacturers sets out to develop a new load the first place they should start is reviewing the specifications of the cartridge the load is for. We list known compatible chambers with each headspace gauge product. 30-06 Springfield headspace gauges are usable in. FIELD gauges are slightly shorter than the SAAMI maximum in order to give a small safety margin.Ĭross-compatibility: Many of our headspace gauges are compatible with multiple chamber specifications. If chamber headspace is excessive, the gun should be taken out of service until it has been inspected and repaired by a competent gunsmith. If a rifle closes on a FIELD gauge, its chamber is dangerously close to, or longer than, SAAMI’s specified maximum chamber size. FIELD: Corresponds to the longest safe headspace.The NO-GO gauge is a valuable tool for checking a newly-reamed chamber in order to ensure a tight and accurate chamber. To determine if there is excessive headspace, the chamber should then be checked with a FIELD gauge. If a rifle closes on a NO-GO gauge, it may still be within SAAMI specifications or it may have excessive headspace. NO-GO: Corresponds to the maximum headspace Forster recommends for gunsmiths chambering new, bolt action rifles.Although the GO gauge is necessary for a gunsmith or armorer, it usually has fewer applications for the collector or surplus firearms purchaser. The GO gauge is essential for checking a newly-reamed chamber in order to ensure a tight, accurate and safe chamber that will accept SAAMI maximum ammo. If a rifle closes on a GO gauge, the chamber will accept ammunition that is made to SAAMI’s maximum specifications. GO: Corresponds to the minimum chamber dimensions.In order from the shortest to longest, they are: GO, NO-GO, and FIELD: Pacific Tool and Gauge offers three lengths of headspace gauges per rifle caliber. Remington Model 7 Receivers and Actions.Remington 700 Actions - Blueprinted & Custom.Custom Shop NOS Titanium Actions - Very Limited.Actions, Bolts, Bottom Metal, Fire Arms.High Speed Steel (HSS) Dovetail Cutter.4 Flute - Double End Ball Nose Carbide Mill Cutters.4 Flute - Single End Ball Nose Carbide Mill Cutters.4 Flute - Double End Square Carbide Mill Cutters.4 Flute - Single End Square Carbide Mill Cutters.2 Flute - Double End Ball Nose Carbide Mill Cutters.2 Flute - Single End Ball Nose Carbide Mill Cutters.2 Flute - Double End Square Carbide Mill Cutters.2 Flute - Single End Square Carbide Mill Cutters.Shotgun / South American and European Big Bore Headspace Gauges.(SAAMI) Centerfire Rifle Headspace Gauges.(SAAMI) Centerfire Pistol & Revolver Headspace Gauges.Bushing Sets For Chamber Reamers and Barrel Tools.Single Bushing For Chamber Reamers and Barrel Tools. ![]()
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