BIELE BARBELS, .30 CALIBEB. 94 No. 10304. Section marked M 3 C. Cooled in air. Pressure Barrel section. Remarks. inch. Diameter. Expansion. Pounds. Inch. Inch. 16,300 0.980 0. 24,450 .980 0. 28,520 .980 0. 32,600 .980 0. 34,640 .980 0. 36,670 .980 0. 38,710 .980 0. 40,750 .980 0. 42, 790 .980 0. 44,820 .980 0. 46,860 .980 0. 48,900 .98O5 .0001 50,940 .981 .001 52,970 .984 .004 55,010 .991 + .011+ 57,050 .995 .015 59,090 .996+ .016 + 61,120 .998 .018 16,300 .997 .017