Lyman Ammo Checker Single Caliber 6.5 PRC Orange. Ammo Checkers are gauges that verify the quality and consistency of both reloaded and factory ammo. They are machined from solid aluminum and cut with custom tooling to SAAMI minimum chamber tolerances. Just drop your cartridge into the gauge and if it fits it will chamber in your gun. This year Lyman is expanding their line of Ammo Checkers into other calibers that are not included in the multi-caliber blocks. Each gauge is clearly marked for caliber and is anodized in a bright orange color so that they will be easy to spot on your reloading bench. Specifications for Lyman Ammo Checker Single Caliber: Manufacturer: Lyman Quantity: 1 Weight: 0.5 lb Color: Orange Package Contents: Lyman Ammo Checker Single Caliber Lyman 7833052: Ammo Checker Single Caliber 6.5 PRC Orange