I went to a range a week or so ago and picked up brass. I had asked the owner and he said go for it. Most of what I picked up was 9mm but I made a haul, about 22lbs of 9mm in a bucket. It had been rained on and most of it out there for some time. Much of it is a dark brown color. I've had some of it in a tumbler going for about 15 hours with corn cob blasting media and some Nu Finish. It's clean and smooth, but still brown. It should still be fine to reload but it just won't be pretty, right?
Also, I've heard of using Lemi-Shine to clean bad tarnish off brass. Before I tumbled this stuff I let it sit in hot water, dish soap and vinegar for about twenty minutes. I then rinsed it and put it on a cookie sheet in the oven at 200 degrees for a bit to dry it out before tumbling. I was afraid to let it sit any longer as I thought the acid in the solution might weaken the brass. It didn't help with the tarnish all that much, either. Can Lemi-Shine damage brass? Is it really effective in removing tarnish this bad? The stuff is quite dark.
Also, I've heard of using Lemi-Shine to clean bad tarnish off brass. Before I tumbled this stuff I let it sit in hot water, dish soap and vinegar for about twenty minutes. I then rinsed it and put it on a cookie sheet in the oven at 200 degrees for a bit to dry it out before tumbling. I was afraid to let it sit any longer as I thought the acid in the solution might weaken the brass. It didn't help with the tarnish all that much, either. Can Lemi-Shine damage brass? Is it really effective in removing tarnish this bad? The stuff is quite dark.