Group measuring software

[gherx]

I see these pictures of groups and it looks like a program reads the picture and highlights the holes and tells you the group size.

Can anyone tell me what this is?

[Chronos]

It's free software called On Target,

link and a vid below

Steve

https://www.youtube.com/watch?v=733dmyZUikI

http://www.ontargetshooting.com/

[gherx]

Awesome, thanks heaps Steve.

[Pom]

Handy.

I can never find my bloody calipers.