Probably too late to help you, but Cheaper Than Dirt has '80s British for $3.99/20. The batch I got was stamped 1985. My Rem 700 shoots that stuff better than the other surplus I've tried.
Gent's, not to alarm you, but be smart and check EVERY round of the Brit .308, they have been found to have split case necks( BEFORE firing).............not all, but several different lots.........fwiworth