Ballistics Trajectory Calculator
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Projectile Parameters
Basic Settings
Atmospheric Conditions
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BC (G1):
Value
Variable | Value |
|---|---|
Distance | Velocity | Energy | Drop | Drop MOA | Windage | Windage MOA | Time (s) |
|---|---|---|---|---|---|---|---|
Bullet BC G1: Ballistic coefficient used with G1 drag model to describe how a projectile decelerates due to air resistance.
Sight Height: Line of sight above the center of the barrel muzzle.
Temperature: Assumed temperature for trajectory calculation. Lower temperatures result in higher air density and a slightly larger drag and vice versa.
Humidity: Assumed humidity for trajectory calculation. Higher humidity results in more water particles and a slightly larger drag and vice versa.
Altitude: Assumed altitude for trajectory calculation. Higher altitude results in lower air density and a slightly lower drag and vice versa.
OZD: Optimum Zeroing Distance or Most Favorable Zero Range refers to the distance at which a rifle is sighted in so that the bullet's trajectory remains within a defined vertical margin — typically ±4 cm / ±1.75 '' — from the line of sight over a certain range. This means:
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The shooter can aim directly at the target up to the GEE without adjusting the scope or holdover.
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Within this range, the bullet stays inside the vital zone (for example, a deer’s kill zone, approximately 8 cm / 3.5'' high).
OZD Max Height: Distance at which the max. OZD height is reached and max. OZD height
OZD LoS Crossing1: Distance at which the bullet crosses the line of sight for the first time
OZD LoS Crossing2 (OZD): Distance at which the bullet crosses the line of sight the second time. Typically referred to as OZD
OZD Max Distance (OZD): Distance at which the bullet is more than the OZD height below the line of sight