Hornady Lock-N-Load Cartridge Gauge .223 Rem .224 Steel

The Hornady Lock-N-Load Cartridge Gauge is a precision steel bench tool machined to 223 Rem SAAMI chamber dimensions for .223 Remington (.224) ammunition. It allows reloaders to quickly verify that resized cases and loaded rounds will drop fully into a spec chamber, confirming correct case length, headspace, and case-head dimensions before that ammo goes downrange.

If a case sits proud of the gauge, the reloader knows it has been over-sized during resizing or has a headspace issue that needs correction; if it drops in flush, the case is good to load. This makes the cartridge gauge an essential, time-saving QC step in any 223 Rem reloading workflow and is equally valuable for sorting surplus or once-fired brass before processing.

Finished in silver and sized at approximately 6.3" long x 2.1" wide x 1.25" tall, the Lock-N-Load Cartridge Gauge is compact enough to keep on the bench next to your press yet rugged enough for daily shop use. Brand-new, factory-fresh Hornady quality in New condition.