Questions : New to tumbling

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rizbunk77

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Ok been reloading small batches to 25 yrs. New to tumbling brass. Got a M1 tumbler cob media. Friend gives me some old rifle brass, been sitting some years. Went into the tumbler with orange "corrosion" spots on some of it. Some of these spots are like just under 1 sq. centimeter so kinda big. Some cases are just freckled with it. Came out after 3 hr. tumble with same corrosion spots. So toss the bad ones? No good? Thanks!
 
How does the inside look ?some times the best thing is to cull out the bad ones I'd look at them with some magnification if they don't look to bad you may want to use them for gallery loads with low pressure .Brass still gets good $ for recycle.

CC
 
Do you have anything added to the media to help it polish? May be worth doing if not.

That said, I think I would pitch those into a bucket to take to the scrap yard down the road.
 
When they have the heavy corrosion stains it's best to use Walnut Hulls or a liquid cleaner (citric Acid) first. The walnut hulls are courser and clean better than the corncob which is mainly for polishing.
 
Well bummer. A lot of times when they do that it comes back around. Time will tell. :)
 
For dry polish I like Flitz case polish and corn cob.
If the brass is realy dirty the red rouge walnut cleans better,

WASH and wax with SS pns is the winner in my book.
 
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NuFinish car polish works pretty good when you mix a small amount with corn cob media. Only takes a teaspoon or less
 
I have found corn cob media is better for shining up the brass and crushed walnut shells are better to clean quicker. I usually run a 50/50 mix of both.

If the spots and corrosion on the brass is deep I would not take a chance on using it. Like Saud above, toss it in the scrap bucket.
 
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