Started with this:
I buffed up the head so I could take a picture.
Profile of hull:
And powder:
Was gifted a tin tool box with ~ 8 lbs. of assorted cartridges/shells. Everything from 45 Colt to 7.7 Jap to 12 gauge buckshot loads.
I took what looked like the worst 20 gauge and cut it open and put a match to the powder, lost the hair on my knuckles trying to take the photo
Next time I'm on the skeet field, I'll try the primer out to see if it goes BOOM.
Pretty good for a hull that I think was fully submerged. The guy who gave me the box said he didn't think it had been opened in over 30 years. I think he is underestimating the time. He's 82 and time is starting to escape him.
Guess powder kept in original canisters and dry stable conditions may be still useable