Trajectory μCard

Calculate a trajectory card from bullet, velocity, firearm and atmospheric parameters. Density is calculated using input density altitudes. Muzzle velocity is found by using linear interpolation between two velocities measured as a fuction of temperature.

Explanation of terms


Notes (displayed at top of printout) [?]

Library (Select bullet or enter BC and Weight below) [?]
Ballistic Coefficient [Links] (0.010 to 2.000) [0.5] [?]
Bullet Weight (5.0 to 15000.0 gr) [220.0] [?]
Caliber (0.100 to 2.000 in) [0.308] [?]

Bullet Length (0.100 to 4.000 in) [1.5] [?]
Plastic Tip Length (0.000 to 4.000 in) [0.0] [?]

Low Velocity (500.0 to 4500.0 ft/s) [2750.0] [?]
High Velocity (500.0 to 4500.0 ft/s) [2800.0] [?]
Low Temperature (-40.0 to 140.0 °F) [32.0] [?]
High Temperature (-40.0 to 140.0 °F) [70.0] [?]
Distance to Chronograph (0.0 to 100.0 yd) [10.0] [?]

Sight Height (-100.00 to 100.00 in) [1.5] [?]
Sight Offset (-100.00 to 100.00 in) [0.0] [?]
Line Of Sight Angle (-90.0 to 90.0 deg) [0.0] [?]
Barrel Twist (2.0 to 100.0 in) [12.0] [?]
Twist Direction [?]

Target Speed (0.0 to 100.0 mph) [10.0] [?]
Target Angle (-90.0 to 90.0 deg) [90.0] [?]
Wind Speed (0.0 to 100.0 mph) [10.0] [?]
Wind Angle (0 to 360 deg) [90.0] [?]

Zero Range (1 to 3000 yd) [100] [?]
Zero Height (-100.00 to 100.00 in) [0.0] [?]
Zero Offset (-100.00 to 100.00 in) [0.0] [?]
Zero Altitude (-4000.0 to 15000.0 ft) [0.0] [?]
Zero Temperature (-40.0 to 140.0 °F) [59.0] [?]
Zero Wind Speed (0.0 to 100.0 mph) [0.0] [?]
Zero Wind Angle (0 to 360 deg) [90.0] [?]

Column One Units (0.050 to 10.000 MOA) [1.0] [?]
Column Two Units (0.050 to 10.000 MOA) [1.0] [?]

Temperature (-40.0 to 140.0 °F) [?]
Altitude (-4000 to 15000 ft) [?]
Ranges (Comma separated list of up to 50 ranges. Units are the same as the zero range) (0 to 3000) [?]

Show Drop and Windage Deltas [?] Windage Correction for Zero Range [?]
Round Output to Whole Numbers [?] Include Target Lead [?]
Include Spin Drift [?]