Lyman Pro Single Features The Lyman Pro Single Ammo Checker is precision machined from corrosion resistant stainless steel to minimum SAAMI chamber tolerances giving reloaders confidence that a cartridge passing the gauge will chamber smoothly. Sized for .223 Rem with a .224 inch bullet diameter this checker is clearly marked for caliber to prevent confusion when working with multiple cartridge types on the bench. The simple drop-in design lets a shooter test a loaded round in seconds without needing to disassemble a rifle action for a test chambering. This straightforward process makes it a practical final step in any reloading workflow. At just 2 inches long the gauge is compact enough to keep on the reloading bench or carry in a range bag for spot checks. Competitive shooters especially benefit from this tool since a round that fails to chamber during a match can cost valuable time or a missed string. Lyman is a long-established name in reloading equipment and this ammo checker reflects that same attention to precision manufacturing. For reloaders who want trouble-free chambering on every round the Lyman Pro Single Ammo Checker is a quick reliable quality control step. Lyman Pro Single Specifications Manufacturer: Lyman Model: Pro Single Caliber: .223 Rem Bullet Diameter: .224 Material: Stainless Steel Length: 2 Available At: GrabAGun