Any ideas as to what may have caused this ??

[BTSDOG]

Just got finished wet tumbling some .38's and .357's, using only lemishine and palmolive dishwashing soap and pins. Ran them in my setup for 3hrs., dumped them in the sink, rinsed off with cold water then put in the oven @ 200 deg. f. for 2 hrs to dry. Anyway, after i rinsed them off and before I put them in oven (so i know this wasnt caused by heat) I discovered this lone oddity. It was the only case like this out of 6lbs. of 357's. Maybe it has gender identity issues, or just decided to come out of the closet. What say the experts of NES ??

 

[moojpg2]

It's either not a brass case, maybe a plated steel case that looked like it was brass, or it's a nickel plated brass case and it stripped a layer of the plating off to just reveal the copper layer.

 

[one-eyed Jack]

Headstamp? Jack.

 

[pastera]

Bad plating - Toss it and don't worry

 

[mac1911]

Put a magnet to it

 

[BTSDOG]

Headstamp? Jack.

 

[50wt]

and from the pics it looks to be a good .05-.06 shorter too.

 

[sieveboy]

Hot spot of lemishine?

 

[mac1911]

View attachment 429328

maybe a nickel plated case and your wash had enough acid in it to strip the nickel?

 

[pastera]

maybe a nickel plated case and your wash had enough acid in it to strip the nickel?

I thought the same but the picture shows other nickel plated without damage - probably a mix of too much LemiShine and a bad plating.

 

[BTSDOG]

UPDATE.......
Good thing it turned pink. I think it was a warning to DONT RELOAD ME.....
Upon closer inspection i see where its getting ready for a CASE HEAD SEPERATION......