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.

It IS rocket science!

PERFORMANCE:

• 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: 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.

Buy Hornady ammo to get bullets that are accurate, consistent, and always dependable.

Specifications for Hornady Superformance .257 Roberts P 117 Grain Super Shock Tip Centerfire Rifle Ammunition: