What can anyone tell me about these rifle shell casings? found at a site where I also found some shotgun casings from the 1920's to 1940's. One just says DEN and 42 (which I understand is probably the year). The other says U.S.C. Co. and 33 W.C.F. under that. Bullet size on both look to be about 8mm, but, that end has some damage, so, hard to measure exactly. DEN cartridge length is 2 1/2" long, USC is 2 1/8" long.
