Once fired brass. Came from a box of 45 ACP 230gr. FMJ-RN Remington UMC 250 rounds Mega Pack. I've been comparing other people's reloads here on Castboolits, but none ever look scratched like mine. I'm referring to the even scratches that goes all around the case of the brass. The single hairline scratch was caused by the magazine lips. I'm confident I can fix that with an sharp stone.
Photo was taken with my Samsung SIII and a 10x BelOMO jewlery's loupe pressed against the lens. I then used Google Plus's editing tools to crop and sharpen the photo.