Whidden Gunworks is pleased to offer Case Gauges to compliment your handloading process. The Case Gauges can be used to determine your own rifle’s headspace and whether or not it falls within SAAMI specifications. Additionally they can be used to determine the headspace of factory ammunition or hand loads and see how they compare with your own chamber. The Case Gauges also can give you information on how to adjust your resizing die to give the optimum amount of shoulder setback during sizing.
The Case Gauges feature all stainless steel construction. They have easy to read markings and they are calibrated using actual Pacific Tool & Gauge headspace gauges. Most Case Gauges will work with several cartridges, so please see the compatibility chart for more information on choosing the right Case Gauge for your application.
|Case Gauge Chart|
|.223 Rem||17-223, 20 Practical, 223 Wylde, 5.56 NATO, 6x45|
|BR||20 BR, 22 BR, 30 BR, 6mm BR, 7mm BR|
|6mm PPC||22 PPC, 30 PPC, 6mm PPC|
|6mm SLR||6.5 SLR|
|6.5 Creedmoor||6mm Creedmoor, 22 Creedmoor|
|6.5x47 Lapua||6x47 Lapua, 20x47 Lapua, 22x47 Lapua, 30x47 Lapua|
|26 Nosler||28 Nosler|
|.284 Win||6-284, 6.5-284, 22-284, 30-284, 35-284, 270-284, 338-284|
|.300 WSM||.270 WSM (Not 7mm WSM)|
|.308 Win||7.62 NATO, 7.62x51, 243 Win, 260 Rem, 7mm-08, 338 Federal, 358 Win|
|.30-06||6.5-06, 8mm-06, 25-06, 270 Win, 35 Whelen, 338-06|
|.300 BLK||.221 FB|
|.300 RUM||.375 Rem Ultra Mag, .338 Edge|
|338 Lapua Mag|
|Belted Mag Family||257 Weatherby, 270 Weatherby, 300 Weatherby, 338 Weatherby, 340 Weatherby, 375 Weatherby, 358 Norma, 264 Win Mag, 300 Win Mag, 338 Win Mag, 458 Win Mag, 6.5 STW, 6.5mm Rem Mag, 7mm Rem Mag, 8mm Rem Mag, 30-338 Norma Mag, 308 Norma Mag, 358 Norma Mag, 300 Brazil, 275 H&H, 300 H&H, 375 H&H, 458 Lott
*Some Ackley Improved Magnum Calibers
Attention: The Belted Magnum Family Case Gauge will headspace off the belt of the case, not the shoulders. If you are looking for a tool to measure shoulder set back, please take a look at our Shoulder Bump Gauge.