DutchV
Ultimate Member
- Jul 8, 2012
- 4,730
If you have a brass tumbler that uses corncob media or similar, just run it through that, and it'll get shiny again. There's no issue with tumbling live rounds, and it's actually sometimes helpful on older milsurp to get them a little cleaner to do a true corrosion assessment.
But, really, I'd just shoot it.
A brief trip to get the big chunks off might be okay. Extended tumbling can break down the powder grains, giving you a faster burn rate, aka Ka-Boom.