Recommend me a ballistic program

[Baldrick314]

I finally got to test out my chronograph today and got velocity readings for my 308. When I came home I plugged the figures into two different ballistics programs along with the details of my projectile and both gave me results different to what I know to be true.

Both programs reckon the rifle should hit 2" high at 100 yards when zeroed for 200 with the velocities I put in. My rifle shoots 1.5" high at 100. I got the environmental settings (temp, humidity, air pressure, altitude) as close to my conditions as I could. Is this the general margin of error you'd expect or am I doing something wrong?

The programs I used were Sierra 6 and Point Blank

[1sikxt]

Isnipe is very good all my calculations have been accurate

[Apollo]

The best and most accurate one I have found. As long as you imput the correct data.

http://www.jbmballistics.com/cgi-bin/jbmtraj-5.1.cgi

[cruze82]

There is one for you iPhone that uses the jbm platform called Ballistics advanced edition its not bad as you can true your dope and it becomes a very accurate algorithm

[Baldrick314]

Thanks guys. I'll check them out

[subatom]

I'm using the Strelok app on my Galaxy and it's does the job.

A feature I really like is you can pick a reticle and set your zero distance. Then when you enter extra distance and wind to tell it what your shooting at it will show you the point of impact on a picture of your reticle.

[Humir]

Lapua do a free one, if you just want something simple for drop when mucking about at difference ranges it's good.

That's all I use mine for, nothing crazy accurate though.

[Lorgar]

The best and most accurate one I have found. As long as you imput the correct data.

http://www.jbmballistics.com/cgi-bin/jbmtraj-5.1.cgi

Ditto. I've used it across half a dozen calibres and it's been consistently accurate.

I print cheat-sheets for my calibres and take them to the range instead of mucking around with apps on the phone at the range.