From left to right:
12.7 x 74 mm prototype, low shoulder (neck lenght 17.9 mm), unfinished mouth, unprimed, headstamp FLB 78 12,7 x 99;
12.7 x 74 mm prototype, low shoulder (neck lenght 17.6 mm), unfinished mouth, primed, headstamp FLB 78 12,7 x 99;
12.7 x 76 mm finished case (75.4 mm long), unprimed, headstamp FLB 12,7 x 76;
12.7 x 76 mm draw stage (84.4 mm long), headstamp FLB 12,7 x 76.