Lym Pro Maximum Cartridge Gauge 380Acp

The Lyman Pro Maximum Cartridge Gauge for .380 ACP is a precision-machined inspection tool designed for reloaders who need to verify ammunition dimensions before firing. Built from corrosion-resistant stainless steel, this gauge checks three critical measurements—case length, case diameter, and overall cartridge length—making it essential for anyone loading .380 ACP rounds for competition, duty, or personal defense use. Whether you're a precision competitor or a meticulous handloader, this cartridge gauge gives you the confidence that your reloads meet spec.

The design reflects lessons learned from Lyman's Pro Die Sets: the outside flats keep the gauge from rolling across your workbench, and integrated o-rings provide a firm, non-slip grip during inspection. Stainless steel construction resists corrosion, so your investment stays accurate year after year even in humid storage or active reloading rooms. Competitive shooters and serious loaders treat cartridge inspection as non-negotiable—this tool makes that process straightforward and reliable.

Because ammunition dimensions directly affect feeding, function, and safety, checking .380 ACP case and cartridge length before you load or load again is time well spent. This gauge consolidates three essential checks into one compact tool, reducing the need for separate measuring devices and speeding up your quality-control workflow.

Key Features

• Precision-machined from corrosion-resistant stainless steel for durability and accurate measurements
• Checks case length, case diameter, and overall cartridge length in one tool
• Outside flats prevent rolling and keep the gauge stable on your bench
• O-ring grip provides secure, non-slip handling during inspection
• Designed for .380 ACP ammunition reloading and verification

Specifications

Caliber	.380 ACP
Material	Stainless Steel
Measurements Checked	Case Length, Case Diameter, Overall Cartridge Length

Frequently Asked Questions

What does this cartridge gauge measure?

The Lyman Pro Maximum Cartridge Gauge checks case length, case diameter, and overall cartridge length for .380 ACP ammunition. These three measurements are the key indicators that your reloads are within safe and reliable dimensions.

Is this gauge only for competitive shooters?

While competitive shooters often rely on cartridge inspection for 100% reliability, any serious reloader benefits from verifying ammunition dimensions. Whether you reload for duty, sport, or personal defense, this gauge helps ensure consistent, safe function.

Will this gauge rust or corrode?

No. The gauge is machined from corrosion-resistant stainless steel, so it resists rust even in humid reloading spaces or long-term storage. This durability protects your investment and maintains measurement accuracy over time.

Can I use this gauge with other calibers?

This gauge is specifically designed for .380 ACP ammunition. Lyman manufactures Pro Maximum Cartridge Gauges for other calibers; verify the cartridge designation on the product to ensure proper fit and accurate measurements.