Posted January 10, 2019 12:00 pm by Comments

By Kristin Alberts

The catch phrase for the new AR500 in .500 Auto Max from Big Horn Armory may be the best of the year. “It can handle anything from prairie dogs to Pachyderms to Peterbilts.” That’s some serious stopping power in a platform weighing less than ten pounds. It’s time we learn about that round.

The .500 Auto Max is the brainchild of Greg Buchel, President of Big Horn Armory in Cody, WY in conjunction with Tim Sundles of Buffalo Bore Ammunition in Salmon, ID. Both gun and ammo were launched in 2018.  Big Horn is known for building custom-grade, big bore rifles. Likewise, Buffalo Bore is one of the best in the industry for producing premium, hard-hitting, heavy hunting loads.
The .500 Auto Max packs some serious wallop. Per Big Horn Armory, “Three pulls of the trigger puts 50 BMG power on target” in an AR-10 platform with reliable extraction. Buffalo Bore states that as of early 2019, “the .500 Auto Max is the most powerful cartridge made for use from any AR platform.”
Only Buffalo Bore and Underwood produce the ammunition. Starline makes and sells the brass for reloaders. Buffalo Bore is clearly in the lead here, working directly with Big Horn to tailor


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