Old Ballistics Calculator


Enter the appropriate data in the spaces below and click the calculate button at the bottom. Standard values are provided in the sight height based on the firearm type, but may be changed to match your setup. Default values are entered in the temperature and pressure spaces but can be changed. A range table that can be easily printed will be displayed in a pop up window once you click calculate.

Rifle (sight height= 1.5", Range Scale= 50,100,200,300,400,500)
Rifle: Match (sight height= 1.5", Range Scale= 100,200,300,600,800,1000)
Rifle: Long (sight height= 1.5", Range Scale= 100,200,300,400,500,600,700,800,900,1000)
Handgun (sight height= 0.8", Range Scale= 25,50,75,100,150,200)

Required Input

Bullet Weight (grains) Ballistic Coefficient
Muzzle Velocity (fps) Sight Height (inches)

Variable Input

Temperature (Fahrenheit) Barometric Pressure (hg)(absolute)

Optional Input

Zero Range
   (default is 100 yds)
Wind Speed (mph)


Input Variables

  • Firearm Type: Choose between Rifle, Rifle: Match, Rifle: Long, or Handgun
  • Description: Use this space to describe the handload or factory ammo you’re using
  • Bullet Weight: Bullet weight in grains (must be at least 10 grains up to 800 grains)
  • Muzzle Velocity: Measure in feet per second (must be between 100 and 4400 fps)
  • Ballistics Coefficient: Refer to the trajectory data. (Must be at least .001 up to 1.0)
  • Sight Height: The default height is predetermined based on the firearm type you choose (this may be changed: Range .1 to 4.0 inches)
  • Temperature: Enter in degrees Fahrenheit (Range of minus 10 degrees to 110)
  • Pressure: Enter the absolute barometric pressure for the shooting site, standard pressure is default. (Range of 20 to 35 hg)
  • Zero Range: Default is 100 yards but you may enter any value from 1 to 1000 yards
  • Wind Speed: Measured in miles per hour (Zero to 70 mph accepted)

For more information: