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Steinel Ammunition Now Offers 500 Auto Max Loads for the Big Horn Armory AR500

By February 21, 2019No Comments

The 350 grain JHP round is capable of achieving 2,225 fps from Big Horn Amory’s AR500 rifle.

Cody, Wyo. (February 2019) – Big Horn Armory (BHA), makers of big-bore firearms, announce a new premium ammunition manufacturer of the .500 Auto Max round: Steinel Ammunition Co. The Steinel 500 Auto Max 350 gr. JHP joins two other ammunition manufacturers in producing this powerful performance round capable of taking big game with just one well-placed shot.

“Another ammunition manufacturer joins the group producing 500 Auto Max factory loads. We are pleased that Steinel Ammunition Company has added 500 Auto Max loads to their lineup. They join Buffalo Bore and Underwood in producing ammo for the most powerful AR type rifle in existence, the AR500 by Big Horn Armory,” Greg Buchel, president of Big Horn Armory, said.

Big Horn Armory, a firearms company dedicated to the design and production of big bore guns, brought out their interpretation of the popular AR-15 style rifle in 2018: the AR500 in 500 Auto Max. The gas operated platform was developed based on a DPMS style .308 AR and BHA redirected the design from there. Built with precision machined 18” stainless steel barrel and a lightweight aluminum receiver and Adaptive Tactical EX Performance M-4 style high-impact polymer stock (collapsible and adjustable), the AR500 is ready for dangerous game. The AR500 adjustable gas block allows the user to run subsonic loads using a suppressor.

The 500 Auto Max round was originally developed by Big Horn Armory using a 500 S&W straight walled casing. The very versatile cartridge can handle anything from small to big game and makes an excellent breaching cartridge when used with the AR500 as a law enforcement CQC or duty rifle.

The new Steinel 500 Auto Max 350 gr. JHP is available online in a box of 20 rounds for $41. 99.

For more on Big Horn Armory, visit or any of their social media platforms: Facebook, Instagram, YouTube or Twitter.

About Big Horn Armory:

Big Horn Armory was founded in 2008 with the expressed intention of designing a Browning-type lever-action gun chambered in 500 Smith & Wesson Magnum. The Big Horn Armory Model 89, made in America, closely follows the work of John Browning with refinements courtesy of modern metallurgy and machining capabilities. The first rifles began shipping in September of 2012 and since then, BHA has added to their big bore lineup with a Model 90 Carbine in 460 S&W, the Model 90A in 454 Casull, the Model 90B in .45 Colt, the Model 89A in 500 Linebaugh and the Model 89B in .475 Linebaugh. In 2017, Big Horn Armory took a departure from its lever-action series and developed the AR500 Auto Max, the most powerful short-range, semi-auto based on an AR .308 platform.

About Steinel Ammunition Co.:

Steinel Ammunition Co. is a premium manufacturer of self-defense, hunting, and target ammunition. While other manufacturers may have a specific product line designated as “match” or “premium,” at Steinel—premium ammunition is all we do. We stand by our products 100 percent with a Satisfaction Guarantee return policy.