Good morning all,
I am a forensic firearm examiner, and I have received an item that has me completely stumped. I’m hoping I can get some help here on what you all may think this actually is!
This item has two coatings, nickel on the round nose portion and copper on the bottom portion. It is not magnetic. Weighs 81.2 grains. Not sure whats inside, but it doesn’t feel heavy enough to have a lead core. Seems to have flecks of brass where the nickel and copper are damaged or flaked off. Diameter is ~.330" at the bottom, ~.354" at what may be a cannelure. The marks from the cannelure(?) extend down part of the copper portion on one side. These marks get fainter and are absent on the opposite side. The base is flat and copper just like the sides, meets the sides pretty much at a 90 degree angle. Fine, faint concentric circles are present on the base. No rifling from firing!
I’ve attached pictures of the side and a picture of it in a 9mm Luger caliber cartridge case just to give an idea of the scale. It is just large enough in diameter to get stuck in it (ask me how I know). Sorry I can’t post a picture of the base, I should have taken a picture of it before I scribed the case number on there.
Any ideas are welcome. I’m looking at bullet literature, air pellets, black powder supplies (did it originally have a sabot?), decorative vehicle wheel rivets, you get the idea. Thank you for any help you may be able to provide!