Description
If you're loading for the 25-45 Sharps, this little gage earns its spot on the bench fast. The L.E. Wilson 25-45 Sharps Case Gage is a one-piece, non-adjustable tool machined for the cartridge, giving you a solid reference to check both case length and headspace. Drop a case in, run a straight edge or caliper across the ends, and you know exactly where your brass sits relative to minimum and maximum spec. No batteries, no fuss, just a dependable reference you can trust round after round.
What the 25-45 Sharps Case Gage Actually Checks
The gage reads two things that matter most to a reloader: overall case length so you know when it's time to trim, and the datum-to-head measurement so you can set your full length sizing die without pushing the shoulder back too far. Over-sizing brass is one of the most common reloading mistakes, and it quietly shortens case life while hurting consistency. By measuring a fired case first, then checking again after sizing, you can dial your die in to bump the shoulder just enough and no more. It's worth noting this gage does not measure body diameter, so pair it with a caliper for a complete picture.
Why L.E. Wilson Case Gages Have Earned Their Reputation
L.E. Wilson has been making cartridge case gages since 1935, when founder Sam Wilson built the first one to help a fellow shooter solve a case-separation problem. That legacy still shows in the machining. Reloaders who run Wilson gages tend to keep them for decades and swear by the repeatability. These are made in the USA and built to a standard that precision shooters and casual handloaders alike have relied on for generations.
The 25-45 Sharps is a necked-up 5.56 case designed as a hunting round for deer, hogs, antelope and coyotes, and it throws a .257 bullet with ballistics that outrun 5.56 NATO. Brass for it isn't always easy to come by, so keeping each case in spec and resizing it correctly goes a long way. This gage is the straightforward way to make that happen.
Key Specifications
- Manufacturer: L.E. Wilson
- Manufacturer Part Number: CG-2545S
- UPC: 815145027238
- Caliber: 25-45 Sharps
- Type: Case Length and Headspace Gage
- Style: One-piece, non-adjustable
- Measures: Min/max case length and headspace
- Country of Origin: Made in the USA
What’s Included
- L.E. Wilson 25-45 Sharps Case Gage
- Instructions
Frequently Asked Questions
What does the 25-45 Sharps Case Gage measure?
It checks the overall length of your cases so you know when they need trimming, and it measures datum-to-head length to confirm proper headspace. That lets you set your full length sizing die correctly and avoid pushing the shoulder back too far. Note that it does not measure case body diameter.
How do I use the L.E. Wilson case gage to set up my sizing die?
Start by measuring a case in as-fired condition, then resize it on your current die setting and drop it back in the gage to see how far you moved the shoulder. Adjust the die until you're bumping the shoulder just enough for reliable chambering without over-working the brass. Checking with a caliper against the gage's reference surfaces makes this quick and repeatable.
Is this gage adjustable?
No, this is the one-piece, non-adjustable style made specifically for the 25-45 Sharps. The adjustable version is a separate product built for belted magnum cases. For a rimless cartridge like the 25-45 Sharps, this fixed gage is exactly what you want.
Does it come with a caliper?
No, the gage ships on its own with instructions. You'll want to pair it with your own caliper to read headspace measurements accurately, since the gage provides the machined reference surfaces and the caliper gives you the actual numbers.




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