EGW Cartridge Checker Features The EGW 7-Hole Cartridge Checker is machined from solid 6061 T6 aircraft grade aluminum giving it the rigidity needed to hold precise chamber dimensions over years of bench use. Each of the seven holes is cut using actual Clymer reamers ensuring the checker mirrors real .308 Win chamber specifications rather than an approximated dimension. Running a cartridge through the checker verifies both minimum case diameter and maximum overall length catching issues that could otherwise cause a jam misfire or feeding malfunction downstream. This makes it a fast repeatable way to screen ammunition before it ever goes near a firearm. Finished with an anodized Matte Black coating the checker resists wear and corrosion from repeated handling at the reloading bench. Reloaders can use it to verify every batch of .308 Win ammunition meets spec before loading magazines for a match or hunting trip. It is equally useful for checking factory ammunition giving shooters a quick sanity check on questionable lots. Precision shooters and reloaders who want to eliminate ammunition-related malfunctions before they happen will find this checker a worthwhile addition to their process. EGW Guns 7-Hole Cartridge Checker Specifications Brand: EGW Caliber: .308 Win Color: Matte Black Material: 6061 T6 Aluminum Finish: Anodized Holes: 7 Available At: GrabAGun