The L.E. Wilson Pistol Max Gage 500 S&W is a precision case measurement tool designed for reloaders who demand accuracy in their 500 S&W Magnum ammunition. Whether you're tuning your full-length sizing die setup or verifying loaded rounds before they hit the range, this go-no-go style gage lets you catch dimensional errors before they become safety or reliability problems. Oversized brass is one of the most common mistakes in pistol reloading—and one of the easiest to prevent with the right tool.
This gage checks the five critical dimensions that determine whether your 500 S&W cases will chamber reliably and safely: overall case length, mouth diameter, base diameter, rim diameter, and rim thickness. By catching these specs out of tolerance, you avoid the frustration of rounds that won't feed or the risk of excessive pressures in your firearm. Pairing it with a digital or dial caliper gives you repeatability that eye-balling or feel can't match.
L.E. Wilson gages are built for the serious reloader who understands that precision handloading starts with precision measurement. The Pistol Max Gage 500 S&W is compact enough to live in your reloading workspace and becomes an essential step in your quality-control routine—whether you're loading for hunting, sport shooting, or both.
Key Features
- Checks all five critical 500 S&W case dimensions in one tool
- Ideal for verifying full-length resizing die setup
- Prevents the common error of over-sizing brass
- Works with any standard caliper for precise measurement
- Compact, durable design for bench or field use
Frequently Asked Questions
What dimensions does the L.E. Wilson Pistol Max Gage 500 S&W measure?
This gage is designed to check overall case length, mouth diameter, base diameter, rim diameter, and rim thickness on 500 S&W Magnum cases. These five measurements cover the critical specs that affect chambering and safety.
How do I use this gage in my reloading workflow?
Place the fired or resized case into the gage and use a caliper to measure the key dimensions. This is especially important when first setting up your full-length resizing die—proper setup prevents the common mistake of oversizing brass, which wastes material and can cause feeding or pressure issues.
What's included with the gage?
The L.E. Wilson Pistol Max Gage 500 S&W is the gage itself. You'll need to supply your own caliper (dial or digital) to take the actual measurements.
Is this gage compatible with other magnum pistol cartridges?
This gage is designed specifically for 500 S&W Magnum. For other cartridges, you will need the appropriate L.E. Wilson gage for that caliber.

