Was told by a local gun shop that the headspace in my 6.5 grendel build was perfect. Went out shooting today and a case was a stuck in the chamber. I had to take the upper off the lower and pry the bcg from the barrel. When I inspected the case they it looked like this Black Hills Gold 6.5 grendel case. I was shooting black hills gold 123gr. If you noticed the bottom is blown out and there is part of the bullet in the case. The primer was also blown out. What should I do?