Hello again and thanks for the help.
First some pictures for your viewing pleasure.
These, unfortunately, I didn’t save in time.
My 50 Cal question,
While obviously abused the cartridge on the right still confuses me. I’m more of a shooter than a collector and I’ve seen a great many failures of both guns and ammunition in my time. This however looks like neither. The base is far to smooth to have been ripped or torn off . It begs the question however, if this is some kind of experiment, how did they expect to extract the fired casing ?
I look forward to any insight anyone might offer. This was all found in Canada if that helps.