Lee Precision Case Length Gauge Features The Lee Precision Case Length Gauge screws directly into the Cutter and Lock Stud or Zip Trim system giving handloaders a precise and repeatable way to square the case mouth after trimming. Because the gauge is caliber specific there is no guesswork involved in setting case length which matters for consistent chamber fit and safe pressures. The hardened steel construction resists wear from repeated use at the reloading bench so the gauge holds its dimensional accuracy over thousands of cycles. Reloaders pair it with a shell holder and Lock Stud to streamline the trim to length process into a quick repeatable step. Squaring the case mouth with this gauge improves bullet seating consistency which translates directly into tighter group sizes downrange. The matte steel finish resists corrosion during normal handling and storage in a reloading bench drawer. This gauge is a small investment that pays off in uniform cases which is the foundation of accurate handloaded ammunition. For any reloader working up precision loads for hunting or long range shooting the Lee Precision Case Length Gauge is a dependable addition to the bench for sale at GrabAGun. Lee Precision Case Length Gauge Specifications Manufacturer: Lee Precision Model: Case Length Gauge Caliber: .300 AAC Blackout Diameter: .300 Material: Steel Finish: Matte Available At: GrabAGun