Speer Gold Dot 125gr JHP
- Cartridge
- .357 Magnum
- Bullet weight
- 8.10 g
- Reference velocity
- 442 m/s
- Muzzle energy
- 791 J
Specification
The load, and the figures its drawing is made from
IdentityWho makes it, and what it is for.
- Designation
- 23920
- Maker
- Speer
- Country of origin
- United States
- Introduced
- 1995
- 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
- 8.1 g (125.0 gr)
- Sectional density
- 0.14
- Ballistic coefficient (G1)
- 0.141
- Reference velocity
- 442 m/s (1450 ft/s)
- Reference barrel
- 102 mm
- Velocity retention exponent
- 0.31
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
- 791 J
- Effective range
- 26 m
- Momentum
- 3.58 kg m/s
- Taylor knockout factor
- 7.8
- Hatcher relative stopping power
- 41
- Energy density
- 1735.0 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 | 442 m/s | 791 J | 0 cm | 0 s | 1.29 |
| 50 m | 385 m/s | 599 J | 7.2 cm | 0.121 s | 1.12 |
| 100 m | 328 m/s | 437 J | 33.7 cm | 0.262 s | 0.96 |
| 200 m | 270 m/s | 296 J | 177.6 cm | 0.602 s | 0.79 |
| 300 m | 234 m/s | 222 J | 490.5 cm | 1 s | 0.68 |
| 400 m | 205 m/s | 171 J | 1040.7 cm | 1.457 s | 0.60 |
| 500 m | 181 m/s | 133 J | 1913.6 cm | 1.975 s | 0.53 |
| 600 m | 160 m/s | 103 J | 3222 cm | 2.563 s | 0.47 |
| 800 m | 123 m/s | 62 J | 7808.2 cm | 3.99 s | 0.36 |
| 1000 m | 94 m/s | 36 J | 16788.9 cm | 5.85 s | 0.27 |
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/speer-gold-dot-125' \ --header 'X-API-Key: your_key'