How to Calculate Mean Radius; the Old Way and the New Way. Why it matters.. 

In this video, I will demonstrate how to calculate a mean radius, using ordinary mathematics and the Hornady 4DOF ballistics app.  we will talk about why it matters when measuring your groups from the range.
See the video below on how to use the Hornady 4DOF ballistics app. This is five bucks. It could make a huge difference in your shooting results. 
How to use Hornady’s Group Analysis
• How to use Group Analy...