The question of the day is:

Will a Fiocchi 12Ga 00B round that's been buried under the deck for a minimum of 12 years fire properly?

The round in question was dug out of the mud, pine needles and other crud from under the deck we're rebuilding. In order to get the round to chamber I had to scrub the brass portion of the case to remove lots of corrosion. I used a Scotchbrite pad and scrubbed it just enough to allow the round to chamber in my beat-up Stoeger Coach Gun. It was corroded so badly that it was difficult to see the primer.

Did it fire?

Yes. It fired on the first strike of the hammer just like it was new. I'd say that's a testament to the reliability of modern ammunition.