Thread: What is this? Part 2

Originally Posted by tommygun

Looks like a 12 gauge shell, but no markings and made of solid brass, looks like a regular shotgun primer in the base. I wondered if they are supposed to be for cowboy action shooting: brass won't expand like plastic does, so less friction and more mass for shucking empty shells out without an ejector? Attachment 126479

Then again, they are too long to chamber in most shotguns