Here’s a carton that you won’t see everyday. Probably never, in fact.
From the 1980 7.62mm Match Cartridge Accuracy Improvement Program, this PXR-6310, Lot LC-80J300S121 carton contains test cartridges loaded with the Nosler 168 grain HP Match bullet. Three other bullets were tested, the Sierra 168 grain MatchKing, the Lapua 170 grain D46, and the Hornady 168 grain BTHP NM. The Sierra was selected for the new Match Cartridge, designated the XM852, first loaded in 1981.