Hornady 257 Roberts +P 117gr SST Superformance 20/Box

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 V-MAX,® NTX,® SST,® GMX,® and InterLock,® bullets to levels of performance that are simply unattainable with conventional ammunition.

Product Features

• Proven Hornady® Bullets: Superformance® ammunition is loaded with Hornady® V-MAX,® NTX,® SST,® GMX,® and InterLock,® 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.
• Performance: 
  • FAST: 100 to 200 fps faster than conventional ammunition.
  • ACCURATE: Uncompromising accuracy without increased felt recoil.
  • CONSISTENT: Unfailing performance across a broad range of temperatures.
  • VERSATILE: This new breed of ammunition is available in 17 Hornet to 444 Marlin, and is safe for use in all firearm types, including semi-autos, lever guns and pump actions.