Had issues with my 308 getting stuck once I chambered a round. Sometimes it would fire other times it would not. Big issue is that every time I chambered a round it would always stick and I had to fight like hell to get it open. I bought a new tool craft bolt bcg and rifle cycles fine. I did notice same marks starting to form on my new bcg also. I think that the bolt catch might be the issue. I have an aero precision upper and lower. Has anyone ever seen this before?