When I started reloading for my rifles I was mainly concerned with the basics and did not delve into concentricity or neck thickness, now that I have more experience I am wanting to understand how these things affect the accuracy and if perhaps I can gain a little more accuracy by performing these steps.

Thank you

But who prays for Satan? Who, in eighteen centuries, has had the common humanity to pray for the one sinner that needed it most?

Mark Twain