I had a .300 WM Encore rifle that was brand new from the factory that had 2/3 of the first Federal Classic factory loads separate just above the case head when fired, and the third had a nice line around the brass in the same spot. The gun didn't detonate like a grenade, or even open up for that matter, but gas did escape the sides of the action. I sent the barrel back to TC and they replaced it. Didn't have any issues with the replacement.
TC also had a recall for unhardened lugs that made it out of the factory that did lead to catastrophic failures regardless of the loads being used so that would be another possibility.
