Hornady Superformance 308Win 165Gr GMX 20 Round Box


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SKU: HOR8099 Categories: ,

Increase your rifle’s performance up to 200 fps without extra chamber pressure, recoil, muzzle blast, temperature sensitivity, fouling, or loss of accuracy.

Superformance® uses progressive propellants that take your favorite GMX® bullets to levels of performance that are simply unattainable with conventional ammunition.


Proven Hornady® Bullets: Superformance® ammunition is loaded with Hornady® GMX® bullets for the ultimate in performance, no matter what the game.

Progressive Hornady® Powders: Superformance® Propellants are the heart of Superformance® ammunition and usher in a new era of performance.

Case and Primer: Like all Hornady® ammunition, our Superformance® rounds use the highest quality cases and primers available. Consistent components translate to consistent shooting in the field.


  • IT IS FAST: 100 to 200 fps faster than conventional ammunition.
  • IT IS ACCURATE: Uncompromising accuracy without increased felt recoil.
  • IT IS CONSISTENT: Unfailing performance across a broad range of temperatures.
  • IT IS VERSATILE: It is safe for use in all firearm types, including semi-autos, lever guns and pump actions.



Sectional Density 0.248
Ballistics Coefficient 0.447 (G1)

Ballistics:Test Barrel: 24″

Velocity (FPS) Energy (Ft/Lbs) Trajectory (Inches)
Muzzle 2960 3209 -1.5
100 Yards 2750 2769 1.6
200 Yards 2549 2380 0
300 Yards 2357 2034 -6.9
400 Yards 2173 1729 -20.1
500 Yards 1997 1461 -40.7

Additional Notes:

Superformance in Gas Operated Firearms: Superformance ammunition is safely within SAAMI pressure guidelines. Gas operated firearms are perfectly safe to use with Superformance ammunition. However, we have conducted tests and conclude that some systems work far better than others.



308 Winchester



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