
4DOF Ballistic Calculator
Range
Drop
Windage
Velocity
Energy
Hornady Ballistics Balculator: Features & User Guide
Key Features of Hornady Ballistics Balculator
1. Authentic Hornady-Style Calculations
- 4DOF (4 Degrees of Freedom) trajectory modeling
- Drag curve-based ballistics (G1/G7 BC support)
- Environmental compensation (altitude, temperature)
2. Preloaded Bullet Database
- Includes popular Hornady ELD® bullets:
- 6.5 Creedmoor 147gr ELD-M
- .308 Win 178gr ELD-X
- .223 Rem 75gr ELD-M
- Custom bullet entry option
3. Comprehensive Inputs
- Firearm Data: Muzzle velocity, zero distance
- Environmental Factors:
- Wind speed & angle (full/half/quarter value)
- Altitude (ft/m)
- Temperature (°F/°C)
- Angled Shooting: Incline/decline compensation
4. Detailed Outputs
Metric | Unit | Description |
---|---|---|
Drop | inches | Vertical bullet path deviation |
Windage | inches | Horizontal wind drift |
Velocity | fps | Retained bullet speed |
Energy | ft-lbs | Impact kinetic energy |
Time of Flight | seconds | Bullet travel time |
User Guide of Hornady Ballistics Balculator
1. Input Requirements
Minimum for Basic Calculations:
- Target distance
- Muzzle velocity
- Ballistic coefficient
For Precision Results:
- Wind conditions
- Altitude
- Temperature
- Shooting angle
2. Step-by-Step Usage
- Select Bullet
Choose from preset Hornady bullets or select “Custom” - Enter Firearm Data
- Muzzle velocity (chronographed recommended)
- Zero range (typically 100 yards)
- Set Environmental Conditions
- Input local temperature and altitude
- Add wind speed and direction
- Set Target Parameters
- Enter target distance
- Adjust for angle if shooting uphill/downhill
- Calculate
Click “Calculate Trajectory” button - Read Results
- Drop/windage in inches or MIL/MOA
- Velocity/energy at target
- Full trajectory table
3. Interpreting Results
- Positive drop values: Hold above target
- Negative drop values: Hold below target
- Windage values: Direction to compensate
Example Output:
500 yards:
- Drop: 42.3 in (8.1 MOA)
- Windage: 12.1 in (2.3 MOA) @ 10mph 90°
- Velocity: 2120 fps
- Energy: 1465 ft-lbs
4. Advanced Features
- Custom Drag Curves: Input G1/G7 BC values
- Multiple Targets: Compare different ranges
- Save Profiles: Store frequent load data (requires additional JS)
Limitations:
- Web version simplifies some 4DOF calculations
- Doesn’t account for:
- Spin drift
- Coriolis effect (critical >1,000 yards)
- Transonic instability
- For match-grade precision, use Hornady’s official app
Pro Tips:
- Verify at known-distance ranges
- Chronograph your actual velocities
- Use G7 BC when available
- Re-calculate when environmental conditions change significantly