ASK AN EXPERTDescription
- Superformance is a cutting edge technological advancement in ammunition design that transcends convention
- Superformance ammunition is 100 to 200 fps FASTER than any conventional ammunition on the market today
- Superformance uses ultra progressive propellants that take your favorite SST or GMX bullets to levels of performance that are simply unattainable with conventional propellants
- Superformance provides increased performance, and is safe to use in ALL firearms, including semi-autos, lever gun and pump actions
- Increases in rifle performance, no increases in barrel wear and felt recoil, along with superior temperature stability are all realized with Superformance ammunition
- Superformance ammunition is safely within SAAMI pressure guidelines. Gas operated firearms are perfectly safe to use with Superformance ammunition
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Warranty Information
| Caliber | 257 Roberts +P |
| Bullet Weight | 117 Grains |
| Bullet Style | SST |
| Case Type | Brass |
| Muzzle Velocity | 2945 fps |
| Muzzle Energy | 2253 ft. lbs. |
| H.I.T.S. # (100 Yard Value) | 872 |
| Ballistic Coefficient (G1) | .390 |
| Sectional Density | .253 |
| Rounds Per Box | 20 |
