Hornady Lock-N-Load Modified Case Features The Hornady Lock-N-Load Modified Case for 6mm GT is manufactured to SAAMI chamber specifications ensuring that measurements taken with it reflect real world chamber dimensions rather than approximations. This modified case is designed to pair with Hornady s Lock-N-Load comparator and overall length gauge tools letting reloaders measure bases to ogive and set seating dies with precision. Because the case is a dedicated gauging tool rather than a live cartridge it can be reused indefinitely without wearing out or needing replacement after each measurement. This makes it a valuable long term investment for anyone loading 6mm GT ammunition regularly. Precise seating depth has a direct impact on accuracy particularly for a modern high performance cartridge like 6mm GT that is often used in competitive or long range shooting disciplines. By using a modified case matched to the exact chamber dimensions reloaders can fine tune their seating die adjustments without guessing or relying on less accurate methods. Hornady s Lock-N-Load system is widely used among precision reloaders for its straightforward design and compatibility across many Hornady gauging tools. For 6mm GT shooters serious about consistent repeatable handloads this modified case is an essential tool for the reloading bench. Hornady Lock-N-Load Modified Case Specifications Manufacturer: Hornady Model: Lock-N-Load Modified Case Caliber: 6mm GT Type: Modified Case Count: 1 Available At: GrabAGun