Unusual marks on brass?

Discussion in 'Handguns: Autoloaders' started by Obturation, May 8, 2021.

  1. Obturation
    • Contributing Member

    Obturation Contributing Member

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    Hey all,
    Hope everyone's feeling good.

    I was sorting out a bunch of brass today, some of it was from a buddys new gun. I don't own a 9mm, never owned one but I have a friend with a sig 226 threw all his brass in my bag because he thought I'd use it. Sorting it out of my brass I noticed all cases had the same marks, rough chamber? It worked fine, no trouble but I was just curious as to what the deal with the marks is.

    Thanks

    20210508_152819.jpg 20210508_151602.jpg
     
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  2. troy fairweather

    troy fairweather Member

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    Could it be from the magazine?
     
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  3. Obturation
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    Obturation Contributing Member

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    I guess it could be from anything, I don't know. I just haven't really seen that type of scratches before. It isn't my gun, just curious if anyone knew. Seems too consistent and if think if it were from the magazine there would be more of a dragged look from when it's pushed from the magazine . my initial thought was a chamber burr or chatter mark but I'll have to ask my buddy if I can look at it next time I'm over there.
     
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  4. EMC45

    EMC45 Member

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    Tool marks in chamber maybe?
     
  5. ontarget

    ontarget Member

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    Could it have already been there? Not even caused by the gun?
     
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  6. Obturation
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    Obturation Contributing Member

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    I'd think not, I'm looking at about 100 cases, all of them with the exact same marks. Wouldn't think factory ammo would be scuffed like that.
     
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  7. Ironicaintit

    Ironicaintit Member

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    It’s got to be from machining marks in the chamber. My BHP leaves similar marks on its brass, but not nearly as clear as those
     
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  8. doubleh

    doubleh Member

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    I'm on the machining marks boat too. As long as everything works as it's supposed too I wouldn't worry about it.
     
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  9. Old_Grouch

    Old_Grouch Member

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    My guess is it's from the feed ramp.
     
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