Hornady 257 Roberts + P Superformance 117 Grain SST Per 20

Increase you favorite rifle's performance by up to 200 fps without extra chamber pressure recoil muzzle blast temperature sensitivity fouling or loss of accuracy. Superformance uses ultra progressive propellants that take your favorite SST and GMX bullets to levels of performance that are simply unattainable with converntional propellants.


- Caliber: 257 Roberts +P
- Grain: 117
- Bullet: SST
- Per 20
- Muzzle Velocity(fps): 2945