The Lyman Case Gauge for .40 S&W (Lyman part no. 7832332) checks the dimensions that matter most on a finished round: case length, case diameter, and overall cartridge length. Lyman builds these gauges in a range of calibers to match the most popular case dimensions, and running your .40 S&W brass through one before loading helps ensure reliable ignition, more consistent accuracy, and an added margin of safety at the range. It’s a quick, low-cost step that catches an out-of-spec case before it ever reaches a magazine. At 4.35 inches overall, it’s compact enough to keep within reach on every loading session.

Key Specifications

• Sized specifically for .40 S&W cases.
• Checks case length.
• Checks case diameter.
• Checks overall cartridge length.
• Helps ensure reliable ignition, accuracy, and safety.
• Measures 4.35 inches overall.

Frequently Asked Questions

What dimensions does this gauge check? Case length, case diameter, and overall cartridge length.

Why check case dimensions before loading? It helps ensure reliable ignition, consistent accuracy, and safer function.

Buy the Lyman Case Gauge, .40 S&W

A quick dimensional check before loading catches problems while they’re still cheap to fix. Order from our Lyman lineup in our case preparation selection, and our Lubbock, Texas team can help you round out your bench-check tools.