NAME – 18.5x70mmR (12 Gauge 2 ¾ inch) M19 00 Buckshot

TYPE – Shotgun shell

YEAR OF INTRODUCTION – 1945

COUNTRY OF ORIGIN – Europe [USA]

CASE TYPE – Rimmed straight

CARTRIDGE LENGTH – 6.3 cm (2.475 in)

CASING LENGTH – 7 cm (2.76 in)

CASE HEAD DIAMETER – 20.37 mm (0.802 in)

CASE RIM DIAMETER – 22.07 mm (0.869 in)

LOAD – 00 Lead Buckshot

LOAD WEIGHT – 31.4 g (484 grains)

PELLET DIAMETER – 8.38 mm (0.33 in)

NUMBER OF PELLETS – 9

WEIGHT OF PELLET – 3.49 g (53.8 grains)

POWDER WEIGHT – 1.68 g (26 grains)

CASING WEIGHT – 19.3 g (0.68 oz)

TOTAL ROUND WEIGHT – 60.8 g (2.14 oz)

MUZZLE VELOCITY 335 m/s (1100 fps)

NOMINAL BARREL LENGTH – 76.2 cm (30 in)

MUZZLE ENERGY – 2759 j (2035 ft/lb)

MUZZLE ENERGY PER PELLET – 307 j (226 ft/lb)

15 fps/in per 2 inchs bbl length from nominal

     These specifications are for the paper-cased, smokeless powder buckshot load of the 20th Century