My first Encore did that in a 30-06. I got beaned between the eyes with a 30-06 case. I thought the gun had blown up. It certainly would have put my eye out had I not been wearing safety glasses. I called TC and they replaced the barrel, no questions.
I actually held the pistol over over head and pulled the trigger to watch what was going on. The gun fired, open, ejected the empty, and closed in a fraction of a second. You had to really watch to see it.
Send it back to TC.