The Hornady Superformance SST Ammo are 100 to 200 fps faster than any conventional ammunition on the market today, and achieves this performance in every gun, without increases in felt recoil, muzzle blast, temperature sensitivity, fouling or loss of accuracy. 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.
Test Barrel Velocity(fps)/Energy(ft-lbs):
100 – 2705/1901
500 – 1863/902
Trajectory (in inches):
100 – 1.60 in.
500 – -43.70 in.
Features:
- Model: 81353
- Caliber: 257 Roberts
- Weight: 117 grain
- H.I.T.S. # (100 Yard Value): 872
- Ballistic Coefficient (G1): .390
- Sectional Density: .253
- Quantity: 20/Box
Specifications
| UPC/EAN | 090255813531 |
|---|---|
| Manufacturer Part Number | 81353 |
| Details | fps, 20, Boxed |
| Brand | Hornady |
| Number Rounds | 20 |
| Muzzle Velocity (FPS) | 2,945 |
| Muzzle Energy | 2,253 |
| Ammo Application | Hunting |
| Caliber | 257 Roberts |
| Ammo Bullet Type | SST |
| Grain Weight | 117 |
| Ammo Casing Material | Brass |
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