Ballistic Information and ballistics calculators at a glance

When it comes to calculating ballistic information there are many different ways of doing it. The best way I have found is to use the various software packages out there.

 

There are many available for free and some versions for sale. I have tried most, I now perfer to use a version on my phone as it works well with the scopes I have and allows me to save my rifles and scopes and the different rounds I use. this means I can turn up on the range get the weather condition, select my rifle of choice and scope, select the rounds I am using that day and I'm set.

 

Below is an example of the ballistics I use and an attachment of the ballistic table I have put some made up data in just to show how it works  

Slope angle, cos: 1.000

Cartridge: Cartridge 1

Bullet weight, grains: 168.0

Bullet speed, f/s: 2600.0

     at temperature, °F: 60.0,

     Temperature coefficient, %: 2.5

Ballistic coefficient: 0.408

Rifle: dsr-1 .308

Zero distance, yards: 109.0

Scope height, inches: 2.50

Vertical click, MRAD: 0.073 (0.00 MOA)

Horizontal click, MRAD: 0.073 (0.00 MOA)

Zeroing weather. Disabled

Weather

Altitude, feet: 328.1

Temperature, °F: 57.2

Pressure, inHg: 29.2

Wind speed, mph: 25.0

Wind direction, degrees: -86.0
     
     

Distance, yards

Bullet speed, f/s

Energy, ft-lbf

Time of Flight, sec

Vert. correction,
  inch

Vert. correction,
  MOA

Vert. correction,
  MRAD

Vert. correction,
  clicks

Hor. correction,
  inch

Hor. correction,
  MOA

Hor. correction,
  MRAD

Hor. correction,
  clicks

300

2008.9

1505.4

0.40

14.33

4.56

1.3

18.2

-20.8

-6.6

-1.93

-26.5

400

1835.0

1256.0

0.56

33.78

8.06

2.4

32.2

-38.6

-9.2

-2.68

-36.9

500

1671.3

1041.9

0.73

63.58

12.14

3.5

48.6

-63.1

-12.1

-3.51

-48.2

600

1516.7

858.1

0.92

105.87

16.85

4.9

67.4

-95.2

-15.2

-4.41

-60.6

700

1371.7

701.9

1.12

163.31

22.28

6.5

89.1

-136.0

-18.6

-5.40

-74.2

800

1235.9

569.8

1.35

239.33

28.57

8.3

114.3

-186.9

-22.3

-6.49

-89.3

Of course to make the ballistic work you need to do your research and know your data.

 

You must know the loads you intend to use including the bullet wieght, the Ballistic coefficient, bullet speed or mv. You must also know the detail of the weather including wind speed and direction, temperature, dew drop, etc etc.

 

At the end of the day the better the data you put in the better the data you get out. We would recommend using a chronograph to work out muzzle velocity as this way you can get the right average for your round however a good starting point is to use one of the many muzzle velocity calculator that are out there. At least this way you start in the right director and you can also correct it later and make small adjustments untill correct and getting the right results.