7N22 Armor Piercing
- Cartridge
- 5.45x39mm
- Bullet weight
- 4.10 g
- Reference velocity
- 850 m/s
- Muzzle energy
- 1481 J
Specification
The load, and the figures its drawing is made from
IdentityWho makes it, and what it is for.
- Designation
- 7N22 BP
- Maker
- Various
- Country of origin
- Russia
- Introduced
- 1998
- Military load
- Yes
- Widely available
- No
ProjectileThe figures the drawing and the solver start from.
- Bullet type
- AP
- Cartridge
- 5.45x39mm
- Bullet diameter
- 5.6 mm
- Bullet weight
- 4.1 g (63.3 gr)
- Sectional density
- 0.176
- Ballistic coefficient (G1)
- 0.32
- Reference velocity
- 850 m/s (2789 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
- 1481 J
- Effective range
- 462 m
- Momentum
- 3.48 kg m/s
- Taylor knockout factor
- 5.6
- Hatcher relative stopping power
- 38
- Energy density
- 6013.5 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 | 850 m/s | 1481 J | 0 cm | 0 s | 2.48 |
| 50 m | 824 m/s | 1391 J | 1.8 cm | 0.06 s | 2.40 |
| 100 m | 798 m/s | 1304 J | 7.2 cm | 0.121 s | 2.33 |
| 200 m | 746 m/s | 1140 J | 30.9 cm | 0.251 s | 2.17 |
| 300 m | 695 m/s | 989 J | 74.6 cm | 0.39 s | 2.03 |
| 400 m | 644 m/s | 850 J | 142.8 cm | 0.539 s | 1.88 |
| 500 m | 594 m/s | 723 J | 241.1 cm | 0.701 s | 1.73 |
| 600 m | 544 m/s | 606 J | 377.3 cm | 0.877 s | 1.59 |
| 800 m | 444 m/s | 404 J | 807.8 cm | 1.283 s | 1.29 |
| 1000 m | 343 m/s | 241 J | 1579.5 cm | 1.795 s | 1.00 |
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/7n22' \ --header 'X-API-Key: your_key'