Forster Products Neck Tension Gage Features The Forster Neck Tension Gage consists of four stepped diameters that increase in size toward the handle with each diameter clearly etched on the metal tool for easy reference. Reloaders insert the stepped end into a sized case neck sliding it until one of the diameters achieves a slip fit revealing the exact inside neck diameter. This information allows handloaders to fine tune neck tension during the bullet seating operation for more consistent bullet release. Used after case neck sizing and before bullet seating the gage fits naturally into an established reloading workflow. The tool also allows inspection of the inside diameters of case necks to confirm that a donut has not formed at the neck shoulder junction a common issue that can affect chambering and accuracy. Built specifically for .338 caliber cases this gage gives precision reloaders a dedicated inspection tool for that cartridge family. At just over a tenth of a pound it is compact enough to keep on the reloading bench without taking up valuable space. For reloaders working with .338 caliber brass the Forster Neck Tension Gage is available for sale at GrabAGun. Forster Products Neck Tension Gage Specifications Manufacturer: Forster Products Reloading Caliber: .338 Cal Reloading Case Prep Type: Case Neck Gauge Weight: 0.105 lbs Available At: GrabAGun