M2 Armor Piercing
- Cartridge
- .50 BMG
- Bullet weight
- 45.90 g
- Reference velocity
- 856 m/s
- Muzzle energy
- 16816 J
Specification
The load, and the figures its drawing is made from
IdentityWho makes it, and what it is for.
- Designation
- M2 AP
- Maker
- Various
- Country of origin
- United States
- Introduced
- 1938
- Military load
- Yes
- Widely available
- No
ProjectileThe figures the drawing and the solver start from.
- Bullet type
- AP
- Cartridge
- .50 BMG
- Bullet diameter
- 12.98 mm
- Bullet weight
- 45.9 g (708.3 gr)
- Sectional density
- 0.388
- Ballistic coefficient (G1)
- 0.67
- Ballistic coefficient (G7)
- 0.336
- Reference velocity
- 856 m/s (2808 ft/s)
- Reference barrel
- 1143 mm
- Velocity retention exponent
- 0.12
Ballistics
Downrange, solved
Solved at the reference barrel of 1143 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
- 16816 J
- Effective range
- 527 m
- Momentum
- 39.29 kg m/s
- Taylor knockout factor
- 145.2
- Hatcher relative stopping power
- 2290
- Energy density
- 12708.4 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 | 856 m/s | 16816 J | 0 cm | 0 s | 2.50 |
| 50 m | 850 m/s | 16596 J | 1.7 cm | 0.059 s | 2.48 |
| 100 m | 845 m/s | 16376 J | 6.8 cm | 0.118 s | 2.46 |
| 200 m | 833 m/s | 15938 J | 27.5 cm | 0.237 s | 2.43 |
| 300 m | 822 m/s | 15503 J | 62.7 cm | 0.358 s | 2.40 |
| 400 m | 810 m/s | 15071 J | 113.1 cm | 0.48 s | 2.36 |
| 500 m | 799 m/s | 14640 J | 179.2 cm | 0.604 s | 2.33 |
| 600 m | 787 m/s | 14211 J | 261.8 cm | 0.731 s | 2.29 |
| 800 m | 763 m/s | 13358 J | 479.4 cm | 0.989 s | 2.22 |
| 1000 m | 738 m/s | 12510 J | 772.7 cm | 1.255 s | 2.15 |
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/m2-ap' \ --header 'X-API-Key: your_key'