
- The case on the left is "FC" headstamp, after tumbling.
- The case in the center is "R-P" headstamp, after tumbling same amount of time, at the same time as the "FC" case.
- The case on the right is "WIN" headstamp before tumbling.
Questions:
What causes the black necks?
Is it normal or am I doing something wrong?
I have tried using steel wool on the necks and it takes it right off. Will steel wool damage my cases or accuracy?
Any ideas how to clean them quicker? (I am using Lyman Corncob Green media)
It takes about 2 hours of tumbling to get it off the WIN, RP and W-W Super headstamped cases, but the FC cases are perfectly clean after about 10 minutes. Thanks for any help, PD.