SmallCaliberCentral

Hey folks,
Here is a great program to use that calculates group size. It is totally free! Thank you Jeffrey Block.
Feel free to ask any questions about the program here.
Use this thread to: ask technical questions about the program, post images of groups measured with OnTarget, or post images of targets you'd like measured with OnTarget if you're not up to doing it yourself.

Download OnTarget here:
http://www.ontargetshooting.com/

Read a great review of the program here:
http://www.6mmbr.com/ontargetsoftware.html


Here is an example of how it works (even on a blurry image). Thank you forum member K_Hini for the target... Note the great shooting! A very respectable 0.248".
Here is his target:

I like it, it works very well and easy to operate.
Thank you for the link.

Is this software safe? I went to run it and my computer advised not to run it because the publisher could not be verified. I dont know much about computers, but I do know that if I downloaded a virus my wife would never let me hear the end of it!

If you downloaded it from the authors site then yes it's safe.

Lakota,
It is totally safe. What that message means is that that program is not recognized by Microsoft (your operating system). That same message will come up with other lesser known programs (or newley made ones such as OnTarget). That's all.

Is it compatible with Windows Vista?

You bet, tested and working on Vista.