Hornady Lock-N-Load modified case and adapter is manufactured to precise SAAMI specifications. Designed to work specifically with Lock-N-Load OAL precision gauges These gauges are needed to measure the bullet relationship to the lands of a barrel. This modified case ensures it remains perfectly square for precision alignment to the chamber of the firearm. This Modified Case threads onto the gauges and has a .002 oversized neck to use the exact bullets you intend to load for the most precise measurement. - Features and Specifications: - .28 Nosler Modified Case - Measures Overall Length of New Loads - Flash Hole Cut and Threaded - Screws Into Lock-N-Load Overall Length Gauge - Straight and Curved L-N-L O.A.L. Gauge Compatible - Slightly Oversized Neck