The RCBS 88280 Chamber/Case Length Gauge is a precision measuring tool designed specifically for .223 Remington cartridges ensuring accurate case preparation and chamber compliance for handloading applications.RCBS Model 88280 Chamber/Case Length GaugeCaliber-specific design for .223 Remington cartridgesMeasures both chamber dimensions and case lengthPrecision-manufactured for accurate measurementsEssential tool for safe and accurate reloadingThis gauge is an indispensable tool for serious handloaders and competitive shooters who demand consistent safe ammunition performance and need to verify proper case dimensions for optimal chamber fit.