Sam White was the guy I was talking about. The article also mentions Harry Ridgeway, and he is the guy that did my other shell for me. It's a pretty small community.
Museums occasionally still find shells in their collection that are live. People didn't used to be as concerned about it as we are today. There is a cannon that sits in the Rhode Island capital building with a cannon ball that got stuck in the dented muzzle while the gun was being loaded during the battle of Gettysburg. The funny thing is that it was there for nearly 100 years before anyone thought to remove the powder from the cannon!