7.62×51 Lake City Match 173 grain ammunition from 1963. Sold in beat up 20 round boxes! I inspected a few of the boxes and the ammo still is in good condition, the boxes just went through hell! I took pictures of the worst box.
The XM118 ammo was supplied for limited use at the 1963 National Matches, and continued development in 1964. It was standardized as M118 in 1965.
This is Loaded Ammunition












