M43 Ball
- Cartridge
- 7.62x39mm
- Bullet weight
- 7.97 g
- Reference velocity
- 715 m/s
- Muzzle energy
- 2037 J
Specification
The load, and the figures its drawing is made from
IdentityWho makes it, and what it is for.
- Designation
- 57-N-231
- Maker
- Various
- Country of origin
- Soviet Union
- Introduced
- 1943
- Military load
- Yes
- Widely available
- Yes
ProjectileThe figures the drawing and the solver start from.
- Bullet type
- FMJ
- Cartridge
- 7.62x39mm
- Bullet diameter
- 7.92 mm
- Bullet weight
- 7.97 g (123.0 gr)
- Sectional density
- 0.181
- Ballistic coefficient (G1)
- 0.3
- Ballistic coefficient (G7)
- 0.15
- Reference velocity
- 715 m/s (2346 ft/s)
- Reference barrel
- 415 mm
- Velocity retention exponent
- 0.18
Ballistics
Downrange, solved
Solved at the reference barrel of 415 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
- 2037 J
- Effective range
- 414 m
- Momentum
- 5.70 kg m/s
- Taylor knockout factor
- 12.9
- Hatcher relative stopping power
- 103
- Energy density
- 4135.2 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 | 715 m/s | 2037 J | 0 cm | 0 s | 2.08 |
| 50 m | 700 m/s | 1955 J | 2.4 cm | 0.071 s | 2.04 |
| 100 m | 686 m/s | 1873 J | 10 cm | 0.143 s | 2.00 |
| 200 m | 655 m/s | 1708 J | 41.8 cm | 0.292 s | 1.91 |
| 300 m | 622 m/s | 1542 J | 98.7 cm | 0.449 s | 1.81 |
| 400 m | 587 m/s | 1373 J | 185 cm | 0.614 s | 1.71 |
| 500 m | 549 m/s | 1201 J | 306.2 cm | 0.79 s | 1.60 |
| 600 m | 507 m/s | 1024 J | 470.6 cm | 0.979 s | 1.48 |
| 800 m | 399 m/s | 633 J | 988.5 cm | 1.42 s | 1.16 |
| 1000 m | 299 m/s | 355 J | 1997.1 cm | 2.018 s | 0.87 |
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/m43' \ --header 'X-API-Key: your_key'