Have you measured the amount of dirt on shiny and "cleaned" (non shiny) to come to your decision?
Agreed!I use turtle wax on my brass. It has 0 dirt so there is nothing to measure.
It would also be environment dependent.
TBH though, I really don’t care and the only true advantage I’ve found personally is that shiny brass is easier to find in the grass after I shoot it. That can matter sometimes to me but I don’t go to much effort for it.
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