[Benning Boy]

The fifth round has what appears to be a copper washed case. All rounds attract a magnet, so they may be either steel case or steel core.

The mystey is killing me.

[jeepcreep927]

I bet they are steel jacket, lead center with a steel core. I have some Czech 308 that is constructed that way.

[Benning Boy]

Took them out today, not tracer. Didn't do much of anything, maybe a hair more accurate than usual, leads me to think heavy ball.

Fired off some of the non-suspect rounds, did have one case split at the top.

Oh well, still fun plinking.