I recently bought a box of miscellaneous reloading stuff at an estate sale, and in that box were these. I have no idea what they are. They're metal, the ones with the white ends are sealed with what appears to be felt, and it feels and sounds like they contain shot. No information was supplied or available from the seller. The deceased was an avid shooter and reloader involved in many shooting disciplines. Since there are many knowledgeable persons on this board, I thought I'd throw this out there and see if anyone could satisfy my curiosity.