The L.E. Wilson Case Gage 22-250 is a one-piece precision measuring tool designed to help reloaders set up full length resizing dies correctly and monitor brass for trimming needs. Built by a brand known for no-nonsense reloading gear, this case gage lets you verify headspace quickly and accurately using nothing more than a caliper—a straightforward way to catch the most common reloading mistake: oversizing brass. When you resize cases, you're walking a line between proper headspace and case longevity; this gage keeps you honest.
Reloading safety and consistency start with knowing your brass. Fired cases stretch and change during the firing cycle, and fired brass needs to be checked before you run it back through the die. A case gage bridges the gap between guesswork and precision. The 22-250 gage checks both overall length (so you know when trimming is needed) and datum-to-head length (so you can set your resizing die without overworking the case). This matters because oversized brass increases pressure, shortens case life, and creates safety risk. Using this tool as part of your setup routine—especially when first installing a die—can save you time, money, and headaches down the road.
The tool is straightforward: slip a fired case into the gage, use your calipers to measure critical dimensions, and compare to your target specs. The knurled middle section gives you a solid grip, and the silvered finish resists corrosion in a busy reloading bench. It comes with instructions and ships in a cardboard box.
Key Features
- Checks overall case length to indicate trimming need
- Measures datum-to-head length to verify correct headspace
- One-piece design for quick, accurate readings with a standard caliper
- Knurled grip section for secure handling
- Helps prevent case oversizing—the most common full-length resizing error
Specifications
| Overall Length | 2.494" |
| Large End ID | .473" |
| Small End ID | .347" |
| Outside Diameter | .991" |
| Finish | Silver with center knurling |
| Included | Gage and instructions |
Frequently Asked Questions
How do I use the L.E. Wilson Case Gage 22-250?
Insert a fired case into the gage until it seats, then use a standard caliper to measure the overall length and the datum-to-head distance. Compare these measurements to your die setup specs and fired-case data to confirm proper headspace and identify cases needing trimming.
What does it measure?
The gage measures two critical dimensions: overall case length (to flag trimming needs) and datum-to-head length (to verify headspace and ensure your resizing die isn't oversizing brass).
What comes in the box?
You receive the gage itself and printed instructions. You'll need your own caliper to take measurements.
Is this gage specific to 22-250 ammo?
Yes—this gage is sized for 22-250 cartridges. L.E. Wilson makes separate gages for other calibers.
