Federal American Eagle 158gr JSP
- Cartridge
- .357 Magnum
- Bullet weight
- 10.24 g
- Reference velocity
- 378 m/s
- Muzzle energy
- 732 J
Specification
The load, and the figures its drawing is made from
IdentityWho makes it, and what it is for.
- Designation
- AE357A
- Maker
- Federal Premium
- Country of origin
- United States
- Introduced
- 1997
- Military load
- No
- Widely available
- Yes
ProjectileThe figures the drawing and the solver start from.
- Bullet type
- JSP
- Cartridge
- .357 Magnum
- Bullet diameter
- 9.07 mm
- Bullet weight
- 10.24 g (158.0 gr)
- Sectional density
- 0.177
- Ballistic coefficient (G1)
- 0.183
- Reference velocity
- 378 m/s (1240 ft/s)
- Reference barrel
- 102 mm
- Velocity retention exponent
- 0.28
Ballistics
Downrange, solved
Solved at the reference barrel of 102 mm from the G1 coefficient and the load's velocity retention. A different barrel gives a different curve.
At the muzzle
What leaves the barrel
MuzzleThe solver’s figures at the reference barrel, where the curve starts.
- Muzzle energy
- 732 J
- Effective range
- 196 m
- Momentum
- 3.87 kg m/s
- Taylor knockout factor
- 8.4
- Hatcher relative stopping power
- 34
- Energy density
- 1604.2 J/cm²
Downrange
Point by point
The same solution as the chart, at each distance the solver reports.
| Distance | Velocity | Energy | Drop | Time of flight | Mach |
|---|---|---|---|---|---|
| 0 m | 378 m/s | 732 J | 0 cm | 0 s | 1.10 |
| 50 m | 334 m/s | 572 J | 9.7 cm | 0.141 s | 0.97 |
| 100 m | 304 m/s | 472 J | 43.7 cm | 0.298 s | 0.88 |
| 200 m | 266 m/s | 363 J | 208.2 cm | 0.652 s | 0.78 |
| 300 m | 239 m/s | 292 J | 539.6 cm | 1.049 s | 0.70 |
| 400 m | 215 m/s | 237 J | 1089.8 cm | 1.491 s | 0.63 |
| 500 m | 195 m/s | 195 J | 1920.8 cm | 1.979 s | 0.57 |
| 600 m | 177 m/s | 161 J | 3106.8 cm | 2.517 s | 0.52 |
| 800 m | 146 m/s | 109 J | 6942.8 cm | 3.762 s | 0.43 |
| 1000 m | 119 m/s | 73 J | 13680.7 cm | 5.281 s | 0.35 |
API
The call that returns this record
The same fields, in the same units, from the same endpoint the page reads.
curl --request GET \ --url 'https://api.gunspec.io/v1/ammunition/federal-ae-158jsp' \ --header 'X-API-Key: your_key'