Blain at ARFCOM reports …

I felt the stiff recoil from the explosion at the same time as hearing the blast, and feeling the hot hair blow in my face, and through my hair. I knew what had happened. Something, I had heard of happening with bad rounds (Indian, mystery handloads), something I hoped to never personally experience.

A round blew up in my chamber.

The problem appears to be a case head failure. The operator was not injured and the rifle survived. All modern rifles are designed to handle this kind of failure gracefully.

[ Many thanks to jdun1911 for emailing me the link. ]