Remember when you tried to pop pimples as a kid and your mother don't pick at it! Same goes for flaking nickel. I would take it out of the chamois since that material can collect moisture and deteriorate the finish much the same as a leather holster. Wax it with Renaissance Wax and keep it in a dry location is the best way to preserve the revolver. I keep mine in a safe with a golden rod heat source and large desiccant canisters as well. Never had a speck of rust on anything I own.

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Gary
SWCA 2515