The ForsterForster 30-40 Krag Field Gauge is an essential tool for precision shooters and gunsmiths focused on maintaining optimal firearm performance. Expertly designed for the 30-40 Krag cartridge this field gauge ensures accurate headspace measurements enhancing safety and accuracy in your shooting experience. Crafted with durable materials it offers reliability and longevity for frequent use. Whether you're a professional or an enthusiast the ForsterForster Field Gauge is a crucial addition to your toolkit guaranteeing your rifle's chamber meets exact specifications for superior performance.