Fire Arms Reloading

Check your Brass!

I found this while reloading this afternoon:

The case wall near the head (bottom) has thinned out from reloading to the point that I have cracks forming. After inspecting all cases again, I found a total of 27 that had thin case walls. This is a potentially dangerous situation, because the combustion gases can escape the case and make their way past the bolt and hit you in the face while firing.