All-American 500: Big Horn Armory's AR500 in .500 Auto Max

“From prairie dogs to pachyderms to Peterbilts--” that’s one helluva promise to hunters on the capability of the Big Horn Armory AR500 in .500 Auto Max. The company famous for high-end, hard-hitting lever guns has ventured into the AR-market in a big way. Fifty caliber big. About the .500 Auto Max The .500 Auto Max is essentially a rimless .500 S&W Mag round built to run in a semi-automatic AR-10 style platform. The Auto Max offers greater velocity and bullet weights over something like the .50 Beowulf, and is built on the much heavier AR-10 platform. Reloaders will be pleased to know they can utilize the same dies, shell holders, and load data as the .500 S&W, though a taper crimp must be used instead of the roll crimp, as the Auto Max headspaces on case mouth instead of the rim.