It does tend to work better with brass cases, but it's still not 100% with those. However, one of the main reasons I bought a gun in this caliber was to shoot the inexpensive steel-cased ammo. In fact, the Hornady SST steel case shoots sub-MOA for me at a very affordable price, and I'd be very disappointed if I couldn't get the extraction/ejection issue resolved.

This was a factory 7.62x39 Savage Scout rifle, so I would hope it had the correct bolt head size already, but I don't know that for sure. I guess I can mic. it when I get home to check. Or maybe Savage just used the same head as the .308 for this particular gun?

I just know that my cases are making partway out (so they are being extracted from the chamber) and then falling off the bolt before they are ejected.

What's the best way to diagnose whether it's an ejector or extractor problem?