Winchester Silvertip 145gr JHP
- Cartridge
- .357 Magnum
- Bullet weight
- 9.40 g
- Reference velocity
- 393 m/s
- Muzzle energy
- 726 J
Specification
The load, and the figures its drawing is made from
IdentityWho makes it, and what it is for.
- Designation
- W357ST
- Maker
- Winchester
- Country of origin
- United States
- Introduced
- 1982
- Military load
- No
- Widely available
- Yes
ProjectileThe figures the drawing and the solver start from.
- Bullet type
- JHP
- Cartridge
- .357 Magnum
- Bullet diameter
- 9.07 mm
- Bullet weight
- 9.4 g (145.1 gr)
- Sectional density
- 0.162
- Ballistic coefficient (G1)
- 0.156
- Reference velocity
- 393 m/s (1289 ft/s)
- Reference barrel
- 102 mm
- Velocity retention exponent
- 0.3
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
- 726 J
- Effective range
- 196 m
- Momentum
- 3.69 kg m/s
- Taylor knockout factor
- 8.0
- Hatcher relative stopping power
- 38
- Energy density
- 1591.8 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 | 393 m/s | 726 J | 0 cm | 0 s | 1.15 |
| 50 m | 341 m/s | 546 J | 9.2 cm | 0.137 s | 0.99 |
| 100 m | 303 m/s | 432 J | 42.1 cm | 0.293 s | 0.88 |
| 200 m | 261 m/s | 320 J | 207.4 cm | 0.65 s | 0.76 |
| 300 m | 230 m/s | 249 J | 550.3 cm | 1.059 s | 0.67 |
| 400 m | 204 m/s | 196 J | 1135 cm | 1.521 s | 0.60 |
| 500 m | 182 m/s | 157 J | 2039.9 cm | 2.039 s | 0.53 |
| 600 m | 163 m/s | 125 J | 3365.8 cm | 2.62 s | 0.47 |
| 800 m | 129 m/s | 78 J | 7851.6 cm | 4.001 s | 0.38 |
| 1000 m | 101 m/s | 48 J | 16236.1 cm | 5.753 s | 0.30 |
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/winchester-silvertip-145' \ --header 'X-API-Key: your_key'