I thought the Yugobrass case was heavy ball and his steel case light ball?
Here’s the picture of the ammo can from post 48.
Am I reading the can wrong? 7.62, Light Ball, copper washed steel case, silver = steel core bullet, powder and ammunition produced in 1975, 440 rounds?
Just to add a little to the brass/steel debate. These steel cases have a copper coating, with maybe some zinc mixed in too. The coating acts as a kind of lubricant making the cases less likely to get stuck in the chamber.