I shot a bunch of 45-70 today with black powder. Had a bottle of water with a bit of Dawn in it at the bench to toss the fired brass into.
When I got home I put the brass in the tumbler with the SS pins and asquirt of Dawn and a drop to Lemon Shine.....But the brass came out a brown bronze color!
This is the same way I've cleaned my brass before with excellent results.
Anyone know what went wrong?