Hornady 380 Auto Cartridge Gauge

The Hornady 380 Auto Cartridge Gauge is a precision inspection tool built for shooters, reloaders, and law enforcement professionals who demand accountability in ammunition quality and chamber compatibility. Developed by Hornady—a manufacturer with deep roots in ammunition engineering—this cartridge gauge provides a go/no-go verification method for .380 ACP rounds, ensuring every round meets safe firing specifications before it enters the chamber. Whether you're running suppressed pistols on duty, vetting reloaded ammunition, or managing inventory in a range environment, this gauge eliminates guesswork and prevents costly malfunctions.

This handheld gauge operates on simple mechanical principles: a properly dimensioned .380 ACP round will chamber smoothly in the "go" end, confirming it meets minimum specifications, while an oversized or defective round will be rejected by the "no-go" end, protecting both firearm and shooter. The compact, durable design resists wear from repeated use and requires no batteries or calibration—a critical advantage in field conditions where electronic tools fail. Hornady's engineering ensures tight tolerances that reflect actual .380 ACP chamber specifications found in quality production firearms, making this gauge a reliable reference standard for quality control across any ammunition operation.

Law enforcement armorers, competitive shooters, and serious reloaders benefit most from having a dedicated cartridge gauge in their maintenance kit. The Hornady 380 Auto Cartridge Gauge integrates seamlessly into pre-shoot inspections, ammunition acceptance protocols, and reload verification workflows. Its lightweight profile (0.15 lbs) makes it portable enough for range bags, duty weapon inspections, or mobile armorer kits, while its precision construction ensures it remains accurate across thousands of rounds. For agencies and individuals who treat ammunition as a mission-critical component, this gauge delivers the objective verification needed to maintain equipment integrity and operator safety.