Got a question for all my knowledge shooters/reloaders

[Festeraxp]

Hello,
What do you all think these markings are from? I’m suspecting belt fed? Am I wrong. The picture is the best I could get it.

 

[rustyinbend]

Maybe ejector swipe from over-pressure. That's my guess.

 

[axarob44]

Did you buy the brass from someone as once fired? Second picture looks like marks from removing the primer crimp with some type of reamer. The first picture looks like it was shot from a HK rifle with fluted chamber. Not sure on that though because it looks like the flutes left marks on just the shoulder and neck.

 

[Festeraxp]

It’s an old case. I have a couple like that. Funny thing is. I never thought of that.

 

[Festeraxp]

They never said once fired. I did anneal them and I did team the primer pocket.

 

[Festeraxp]

Ream not team. Lol.

 

[308pirate]

Size them and go. The flute marks will iron out with 60,000 PSI from the inside.

 

[roostercogburn98]

Agree with @axarob44 and marks from a fluted chamber. Here is some 9mm that came from my mp5.

 

[Steel head]

Fired in an HK or clone.