SS media tumbling additive?

[mesojdm]

Is there any additive you guys are using in the wet media for keeping brass shiny? When I used the vibratory, a dab of nufinish seemed to help maintain the brass finish. But upon looking at fresh wet tumbled cases(1/8tbl lemonshine+1tbl dawn) VS cases I converted a month ago, I was surprised. Same LC brass, stored in Tupperware & dry area.
Example 1;


Any suggestions?

[armyguy209]

Mine do the same thing. People will say try rinsing or tumbling with cold water. I have tried a lot. I am actually considering buying a vibratory tumbler to polish the completed ammo in.

If you figure it out, make sure to post it up.

[Mud Eagle]

My brass largely does the same thing, even stored in ziplocs and out of sunlight in climate control.

['ol shooter]

I use the Lemishine after I clean the cases in Dawn and rinse thoroughly. I take them out after 15-20 minutes and rinse again. Some .45acp cases looked just like yours, and some 9mm stayed shiny. Go figure. I got this technique from another thread on this subject. You could tumble them like some do here after loading. I really don't care as long as they shoot.

[mindwreck]

just a little oxidizing.. nufinish leaves a thin film that keeps it shiny. SS leaves it squeaky clean and exposed to air.

[Coyotegunner]

I use a little more Limishine and towel dry after rinsing.I had that same issue before as well and ended up sending them through another tumble for about 1/2 hour with clean solution.