7MM Rem cases corrosion

[Shootn4fun]

Try steel wool saturated with Kroil??

 

[Uncle yib]

I decided to reload some 7MM Rem cases that I had tumbled (Dillon tumbler with Dillon polish) and then stored in 50 round plastic storage cases neck down about a year ago. When I opened them I found about 80% had this corrosion on the neck. I tried using 400 steel wool but it did not remove it.
Thoughts?
I expect I will be tossing them. Right?View attachment 210220

Any brass that I run across that looks questionable I'll throw in the trash I'm not gonna risk my health or my weapon over a $.75 piece of brass

 

[thwatson2]

It's pretty common, you can wet tumble in some water with dawn and vinegar or just soak them, then dry them well. I would recommend you anneal the necks afterward. It's good practice to anneal when reusing brass. Keep the brass workable and reduce splitting

 

[Stgraves260]

I decided to reload some 7MM Rem cases that I had tumbled (Dillon tumbler with Dillon polish) and then stored in 50 round plastic storage cases neck down about a year ago. When I opened them I found about 80% had this corrosion on the neck. I tried using 400 steel wool but it did not remove it.
Thoughts?
I expect I will be tossing them. Right?View attachment 210220

This may sound funny but it works. When you store your brass/ammo for long periods of time in a plastic container, put some cotton balls or a paper towel sheet in the container. It will help absorb the moisture. ( Brass is not none corrosive) Try that and see if it helps.

 

[Stgraves260]

I decided to reload some 7MM Rem cases that I had tumbled (Dillon tumbler with Dillon polish) and then stored in 50 round plastic storage cases neck down about a year ago. When I opened them I found about 80% had this corrosion on the neck. I tried using 400 steel wool but it did not remove it.
Thoughts?
I expect I will be tossing them. Right?View attachment 210220

CLR from Home Depot or Lowe's mite do the trick if you want to try and save them.

 

[Stgraves260]

CLR from Home Depot or Lowe's mite do the trick if you want to try and save them.

 

[epags]

" if you want to try and save them."

Now after reading all the comments I am torn between just tossing them and the effort to save something that might not perform well (neck splitting or out of round neck thickness). I have not gone the extra step to buy a inside & outside neck turner. For the price I could buy a lot of virgin brass (LOL).

 

[browndcm]

When I am done with my brass, whatever it is that I'm doing, I tumble in dry media treated with car wax. You will never have this problem again and the wax will prevent a chemical bond between the bullet and the case neck

I always air dry my cases before storage never had a problem They may discolour a little with time but nothing like that

 

[Stgraves260]

Now after reading all the comments I am torn between just tossing them and the effort to save something that might not perform well (neck splitting or out of round neck thickness). I have not gone the extra step to buy a inside & outside neck turner. For the price I could buy a lot of virgin brass (LOL).

Yes sir I understand. 7 Rem Mag Brass is easy to find. Doesn't cost much either. It's probably cheaper than a visit to the emergency room. LoL

 

[Stgraves260]

It would be very interesting to see if the CLR would work though. It works good on everything around the house. It Penetrates in the material.

 

[epags]

It would be very interesting to see if the CLR would work though. It works good on everything around the house. It Penetrates in the material.

I am laughing because two weeks ago I hauled a batch of never used chemicals to our local haz disposal and the batch included a big bottle of CLR. Oh well.

 

[Trental]

Just tumble them until it is polished off. Don't use any chemicals. It is just tarnish albeit heavy tarnish. Whatever tumbler you are using just run them again until it's gone.

 

[Flatbow]

Blackbrush,
How much and brand car wax do you add to your dry media? Thanks

When I am done with my brass, whatever it is that I'm doing, I tumble in dry media treated with car wax. You will never have this problem again and the wax will prevent a chemical bond between the bullet and the case neck

 

[Stgraves260]

I am laughing because two weeks ago I hauled a batch of never used chemicals to our local haz disposal and the batch included a big bottle of CLR. Oh well.

LoL!!!