500 Auto Max 350gr. JHP


  • 20 rounds
  • New Starline brass
  • Hodgdon Powder
  • 2,225 FPS (18″)

A reasonably-priced and effective round for the new AR500 platform.

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This is THE big bore AR cartridge for pure power.  The 500 Auto Max, fired from the Big Horn Armory AR500, is capable of taking any game, anywhere.  This Steinel load uses a 350 grain XTP Mag- the same .500″ projectile that is most popular in the 500 S&W.  The advantage of 500 Auto Max is clear when comparing its performance against its parent revolver cartridge: the same 350 grain bullet from an 8″ X-Frame achieves 1,700 fps.  The longer barrel of the AR-500 allows us to drive this same bullet 2,225 fps!  Backed by our Satisfaction Guarantee

20 Rounds

Check out Big Horn Armory’s AR500

Big Horn Armory 500 Automax Ammo


Range (yds) Velocity (fps) Energy (ft-lbs) Trajectory (in)
0 2,225 3,847 -1.5
100 1,706 2,261 0.0
200 1,293 1,300 -10.8
300 1,042 844 -42.6
400 913 647 -106.2
500 824 528 -211.6

Additional information

Weight 1.56 lbs
Dimensions 2.4 × 3.10 × 2.3 in

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