Chris mine it sheared off completely. It was not the perfect around cut though. It was a jagged, and very uneven. It did blow some powder back at me. The magazine follower, floor plate, and spring all shot out. I found the floor plate at my feet.
I inspected the brass. Paper clip test, and measured for length. All were in spec. The smith sectioned a couple of pieces. Noting wrong. I am going to chalk this up to a bad round. I fired some of my reloads today. All went bang. Looks like the gas plug in my rifle is stuck though. I will have to look around to find the wrench for the gas plug nut. If you guys could be kind enough to point me to somewhere with a link that has one that is not on ebay. (I do not do pay pal.)
No matter how many times you do it and nothing happens it only takes something going wrong one time to kill you.