so I was with a friend on the long range today, I had a 6.5 and he had a 308, we are both shooting Hornady. he handed me a mag to try his 308 rifle, and when I fired it didn’t sound right, almost no recoil and very soft sound. I tried to eject the case and ejector wouldn’t catch the brass, used a rod to get the brass out. I figured something was wrong so we inspected the brass and found it was a 6.5CM and the primer is blown out of the primer pocket, brass it self does not look deformed. My question is, Will firing this 6.5CM out of a 308 rifle damage the rifling?