Jump to content
Sign in to follow this  
jackandjill

Rust on spent casings ?

Recommended Posts

So I have bunch of 9mm and 556 spent casings from last year. They have been in a open container in the garage for a year.

Some have white/greenish bubbles and others (specially 9mm) look like complete rust (brown).

 

When I scratch these white/green powdery bubbles, they expose copper like metal area.  Are casings made of copper with brass coating ?

 

I thought brass casings dont go bad.  Is something wrong with the casings or the way they were stored open in garage ? 

Share this post


Link to post
Share on other sites

Everything oxidizes when exposed to some level of moisture.  Brass will show white and green like the Statue of Liberty.  Toss them in the tumbler and clean them up GTG.  Brown rust-like on brass is tarnish.  Same rules as oxidation.  Rarely will the brass be no good after exposure for a year in the garage.  Brass is made of copper and zinc.

Share this post


Link to post
Share on other sites

Brass is copper and zinc. If you have serious brown spots, and they remain after tumbling, it is likely a spot where the zinc was leeched out and the cartridge is no longer as strong. It is one of the reasons in not fond of wet tumbling with steel media and lemishine. It can hide such issues.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
Sign in to follow this  

  • Recently Browsing   0 members

    No registered users viewing this page.



×
×
  • Create New...