Just curious about a case I found. I was picking up cases and found a 308 case. I took it home and noticed it wasn't a brass color but a copper color. I polished it and it turned out bright copper maybe a tad duller than polsihed copper tubing, more like reddish bronze. The head is stamped 19 on one side and 93 on the other. I don't see a crimp in the primer, might have been reloaded as it looks like a Remington or Winchester primer.

Slap a magnet next to it...

Just another random thought. Hydrochloric acid will turn brass a copper color. The acid leaches out the surface zinc and leaves only copper behind.

russia and china both produce steel cases copper plated. very common especially in 7.62x39

Last week another shooter at the range offered me his 308 cases .
Most were imported steel cases with a copper looking wash.

Not sure from were , maybe Wolf ?
I didn't mess with them
I saw they were importing 308 and 30-06 ammo

Johnch

Ok a cheap communist imported steel case! They can kiss it where the light don't shine as far as I am concerned!