500 Auto Max 280gr. Brass Spike


  • 20 rounds
  • New Starline brass
  • Hodgdon Powder
  • 280 grain hollow base, brass bullet
  • 2,215 FPS (18″)

Extreme velocity with a 1/2″ projectile

Available on backorder

SKU: 500AM280BR20 Category:


This 500 Auto Max load uses our own 280 grain hollow base spire-point brass bullet.  The reduction in material effectively lowers weight without compromising stability, and provides additional capacity for slower-burning powders.  This is one of the most enjoyable loads we’ve had the pleasure of shooting- across all platforms.  Muzzle flash is prominent and the speed is blistering for a 50 caliber bullet fired from an AR platform.

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20 Rounds

Check out Big Horn Armory’s AR500

Big Horn Armory 500 Automax Ammo


Additional information

Weight 1.56 lbs
Dimensions 2.4 × 3.10 × 2.3 in