Brass question

[SneakyThunderCat]

Curious if anyone's seen similar lines on brass or what it could be? Norma brass once fired, the lines go away after I tumble the brass. Started leaving marks on the brass recently. I've never noticed it until I shot this weekend.

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[Wrench]

Spray the chamber out with brake cleaner. It likely has some crud in it.

 

[merrittchristen]

It could also be the case you’re putting them in I had mine in an mtm case and when it was getting shook around in my pickup driving around it put marks similar to those.


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[Muley Buck]

It could also be the case you’re putting them in I had mine in an mtm case and when it was getting shook around in my pickup driving around it put marks similar to those.


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I'd be willing to bet this is exactly what this is.

 

[SneakyThunderCat]

That's good info. I honestly never even thought about that. Makes complete sense, and the bullets have been sitting in the same case for about a year.

 

[Don Qui Puncher]

I had a box of unfired ADG in my truck and the rattling around from the box left lines like that, I started cutting pieces of foam to put on top and it helps

 

[Muley Buck]

I had a box of unfired ADG in my truck and the rattling around from the box left lines like that, I started cutting pieces of foam to put on top and it helps

Yup, I do this too. It does help.

 

[Cinchy52]

From your photo looks like the 3 case from left might have the start of a split neck?

 

[35WhelenAI]

Case number four from the left as well, just to the right of the shiny reflection.

 

[SneakyThunderCat]

Is that common with once fired brass? I will definitely check it out!

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[keystone112]

I wouldn’t say it is common but I think if you shoot as much as most of us do you will get a bad batch once in a while.

A buddy once gave me about 250 pieces of once fired 22-250 brass. I tumbled them all and when I inspected them about 25 pieces had split. I got rid of all the ones with that head stamp.

 

[35WhelenAI]

Agree with the above post. It's not par for the course to have split necks on the first firing, but metallurgy happens. I can count on two hands the number of split necks in 30 years of reloading. Definitely not common, unless the brass gets overworked through repeated firings in sizings.

 

[Wrench]

A better pic of the neck would help. Norma is typically quite soft brass and splitting on one firing is very abnormal for them.....but not impossible. It could be a drag mark from extraction or defect....need a better pic, and it appears cases to the right also show a potential similar mark.