Posted 10 months ago
I'm having problems finding this Union Metallic Co. (which later merged with Remington Arms) cartridge online. I'm not well versed in guns and ammo, so I hope someone here can guide me. Cartridge and shell are 3-1/8" long and weighs 23 grams total. Diameter at the headstamp is 12 mm. Headstamp reads "UMC 2 06". The shaft is fluted. This cartridge may predate WW II, but I'm not sure. Any help out here?