The L.E. Wilson Case Gage 300 PRC is a one-piece precision measuring tool designed to help reloaders set up their full-length resizing dies correctly and monitor case headspace without guesswork. If you're serious about handloading rifle ammunition—especially 300 PRC—you already know that oversizing brass is one of the quickest ways to shorten case life and create safety issues. This gage lets you catch that problem before it starts, using nothing more than a caliper to cross-check your work.
The core function is straightforward: insert a fired case into the gage and measure the dimension from the case head to the datum line (the point on the shoulder where the case diameter is standardized). Pair that measurement with the gage's reference dimensions and your caliper, and you'll know exactly how much sizing your cases need. For 300 PRC reloading, this means you can dial in your die height to resize only what's necessary—preserving case longevity while maintaining safe, consistent headspace.
L.E. Wilson gages are made for shooters who understand that brass is an investment and that precision reloading isn't about taking shortcuts. The silvered finish with knurled grip makes it easy to handle, and the single-piece construction means there's nothing to lose or misalign. Whether you're loading match ammo for competition or hunting rounds you plan to reload for years, this gage is a practical tool that pays for itself in preserved brass and dialed-in ammunition.
