Buffalo Bore Heavy 220gr Hard Cast
- Cartridge
- 10mm Auto
- Bullet weight
- 14.26 g
- Reference velocity
- 366 m/s
- Muzzle energy
- 955 J
Specification
The load, and the figures its drawing is made from
IdentityWho makes it, and what it is for.
- Designation
- 21A
- Maker
- Buffalo Bore
- Country of origin
- United States
- Introduced
- 2005
- Military load
- No
- Widely available
- No
ProjectileThe figures the drawing and the solver start from.
- Bullet type
- Hard Cast LFN
- Cartridge
- 10mm Auto
- Bullet diameter
- 10.16 mm
- Bullet weight
- 14.26 g (220.1 gr)
- Sectional density
- 0.197
- Ballistic coefficient (G1)
- 0.158
- Reference velocity
- 366 m/s (1201 ft/s)
- Reference barrel
- 127 mm
- Velocity retention exponent
- 0.24
Ballistics
Downrange, solved
Solved at the reference barrel of 127 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
- 955 J
- Effective range
- 189 m
- Momentum
- 5.22 kg m/s
- Taylor knockout factor
- 11.3
- Hatcher relative stopping power
- 45
- Energy density
- 2094.4 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 | 366 m/s | 955 J | 0 cm | 0 s | 1.07 |
| 50 m | 319 m/s | 726 J | 10.6 cm | 0.147 s | 0.93 |
| 100 m | 291 m/s | 603 J | 47.6 cm | 0.311 s | 0.85 |
| 200 m | 253 m/s | 457 J | 227.6 cm | 0.681 s | 0.74 |
| 300 m | 224 m/s | 358 J | 595.4 cm | 1.102 s | 0.65 |
| 400 m | 200 m/s | 284 J | 1217.3 cm | 1.575 s | 0.58 |
| 500 m | 179 m/s | 227 J | 2174 cm | 2.105 s | 0.52 |
| 600 m | 160 m/s | 182 J | 3570.3 cm | 2.698 s | 0.47 |
| 800 m | 127 m/s | 114 J | 8271.4 cm | 4.106 s | 0.37 |
| 1000 m | 100 m/s | 71 J | 17013 cm | 5.889 s | 0.29 |
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/buffalo-bore-220-hardcast' \ --header 'X-API-Key: your_key'