Lym Pro Maximum Cartridge Gauge 40Sw
The Lyman Pro Maximum Cartridge Gauge for .40 S&W is a precision inspection tool built for reloaders who refuse to compromise on ammunition quality. Whether you're loading for competition, duty carry, or the range, this stainless steel gauge lets you verify critical dimensions before you fire a round—case length, case diameter, and overall cartridge length—giving you the confidence that comes with a properly built cartridge.
Competitive shooters and serious handloaders have made cartridge gauging a non-negotiable step in their reloading process. Lyman's Pro Maximum line delivers the precision and durability required for that level of scrutiny. Machined from corrosion-resistant stainless steel, this gauge resists rust and wear through years of use. The knurled exterior flats prevent the tool from rolling on your bench, while the integrated o-rings grip your hand without slipping—practical details that matter when you're checking dozens or hundreds of rounds.
This is the kind of tool that separates meticulous reloaders from casual ones. It's not glamorous, but it's exactly what you need to catch dimensional problems before they become reliability problems. If you're serious about your handloads, the Pro Maximum Gauge belongs in your reloading setup.
Key Features
- Precision-machined stainless steel construction resists corrosion and wear
- Checks case length, case diameter, and overall cartridge length in one tool
- Knurled flats prevent rolling on the bench
- O-ring grip ensures secure, non-slip handling
- Purpose-built for .40 S&W ammunition inspection
Specifications
| Caliber | .40 S&W |
| Material | Stainless Steel |
| Measurements | Case length, case diameter, overall cartridge length |
Frequently Asked Questions
What does a cartridge gauge check?
The Lyman Pro Maximum Gauge for .40 S&W inspects three critical dimensions: case length, case diameter, and overall cartridge length. These measurements ensure your handloads meet specifications and function reliably in your firearm.
Is this gauge suitable for competitive reloaders?
Yes. Competitive shooters regard cartridge gauging as mandatory for competition ammunition. This tool is built to the precision standard those shooters demand.
Will the stainless steel rust?
The gauge is precision-machined from corrosion-resistant stainless steel, designed for long-term durability and rust-free use in the reloading environment.
What's included?
The product is the Lyman Pro Maximum Cartridge Gauge for .40 S&W; no additional components are listed.

