I have a 20" woa spr build with an aero precision upper jp fmos bolt. Giessele rail. Oss 7.62 hq qd suppressor. 5d tactical 80% lower and a giessele lpk. I've built my upper twice with 2 different upper receivers. Both aero uppers. And my brass still looks like this with standard milspec federal xm195 ammo. Everything is tightened to spec and no matter what I do my brass still looks like this. The only thing I can think of is its the lower but everything looks normal. Am I missing something? I reload but its hard to know when im getting pressure issues when milspec ammo flattens my primers and shows ejector swipe.