Couple problems happening here

[Sky Zero]

Originally Posted by Vlim

Take a look at the extractor spring (the little coil spring below the extractor itself). When it is weak, the round will be pulled backwards, and rammed out by the next round. The dent is usually caused by the extracted case banging into the receiver. You should notice that the case barely clears the gun while shooting. With a fresh extractor spring, the case will jump over you.

I had a mismatched VoPo with the same 'features'. The cases kept hitting me in the face, or on top of my head, and all were dented. Finally I replaced the extractor spring and all went back to normal.

Well the rounds seem to jump high well enough and usually bang me on the top of my head after hitting the ceiling above the shooting station. i'll take a looksie at the spring; anything I should notice when looking at it if it's a weak spring? Could the ejector be cutting into the rounds that give that triangular shaving pattern (see original photos) Thanks! Great info as well.