I put a batch of 9mm brass in my rock tumbler yesterday along with a bunch of crushed walnut shells, then forgot about it until today. I normally don't tumble that long, with 4 to 6 hours the norm. This was in there almost 24 hours. The 9mm brass is incredibly clean now and I'm thinking I might start letting stuff tumble longer than in the past.
The question is: Is this bad for the brass at all, or am I just using up the tumbling media quicker than need be if I over tumble?
The question is: Is this bad for the brass at all, or am I just using up the tumbling media quicker than need be if I over tumble?