What is causing this to my brass!!!!!

[TTE]

What did they look like before you loaded them ?
Did you inspect them prior to loading ?

 

[Mark611]

yes, they looked normal, but I have now ran across a few after further inspection on a few of the unfired cases I have seen the same marks on the brass but it is very faint, I think marks turn black after firing from what I'm seeing.

 

[divingin]

yes, they looked normal, but I have now ran across a few after further inspection on a few of the unfired cases I have seen the same marks on the brass but it is very faint, I think marks turn black after firing from what I'm seeing.

Soot from the initial gas blowby may be staining some slight indentation. As has been suggested, contact Starline. You might want to reference this thread so they get a better idea of what's going on.

 

[Wild Bill IV]

Soot from the initial gas blowby may be staining some slight indentation. As has been suggested, contact Starline. You might want to reference this thread so they get a better idea of what's going on.

Agreed!! But the blow back would be random! He is seeing two distinct areas!! Plus, the chamber would have to be really wide near the 200 mark to make it that far back in the chamber!!!

 

[MGYSGT]

The ring at the bottom, is too much set back on sizing

 

[Mark611]

Could be, but this is new unfired brass, I did not size the brass before firing, the cases were all in spec I checked all of them before loading them, the pix show the results after firing,

 

[pdog06]

yes, they looked normal, but I have now ran across a few after further inspection on a few of the unfired cases I have seen the same marks on the brass but it is very faint, I think marks turn black after firing from what I'm seeing.

Have you called Starline yet?

This should tell you it is most likely a brass issue since you see the same markings on unfired pcs of brass… the fact that the marks are faint would be expected since it hasn’t been stressed by firing them.

I would take pics of the fired and unfired brass and call starline. Get an email address to email the pics to so it proves your issue, and the fact the marks are more pronounced after 1 firing. They should replace the brass.