Extreme Big Bore Test: Underwood 500 AutoMax in the Big Horn Armory AR Chronograph Test

Today we put Underwood 500 AutoMax ammunition to the test in the Big Horn Armory AutoMax AR platform, and run it across the chronograph to see what this big-bore beast is really capable of.

The 500 AutoMax is known for delivering serious energy and deep-woods capability, so we’re checking real-world velocities, consistency, and performance to see how Underwood measures up in this unique AR chambering.

In this video you’ll see:
✔️ Chronograph data and raw velocity numbers
✔️ Underwood ammo performance in the BHA AR
✔️ Recoil impressions and shooting footage
✔️ Thoughts on the 500 AutoMax as a hunting or defense option

If you enjoy big-bore testing, chronograph breakdowns, or seeing what extreme cartridges can do, this one’s for you!

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@GoGunnr
@BigHornArmory

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