Lake City terminated production of .30 cal in the late 1970s, early 1980s…I have both Ball and Blanks with 1970s dates, but NO 1980s, or 90s.
In late 1990s, the requirement for Funeral salute .30/06 blanks was such that the Army procurement section put an order out to tender, and I think AMA of Denmark got the job; it was a small lot, had to be “repacked” to meet US Army etc. packaging rules, and was not repeated; after 2000, Lake City again took up making 30/06 blanks only, using the same drawing dies used for making M82 7,62 Nato Blanks, but sizing them to 30/06 specs.
Cases are star crimped in the same way as the AMA Danish were done (the red lacquered wad of the original M1909/2nd model was found to be a failure as to integrity of seal, especially in high vibration situations (Vehicles, AFVs etc); same reason the M82 Blank was also converted to star crimp seal in the late 1990s.)
All the original machinery for making .30/06 had been disposed of or converted in the 1980s (Plate loaders, dies, etc) so LC had to “make do” with existing 7,62 case making equipment.
I don’t know if the Extractor groove is cut to US .30 Cal profile or to 7,62 Nato profile???