19.7x89mmR (10 gauge 3 ½ inch Magnum) #4 Steel Shot

NAME – 19.7x89mmR (10 gauge 3 ½ inch Magnum) #4 Steel Shot

TYPE – Shotshell

YEAR OF INTRODUCTION – 1976

COUNTRY OF ORIGIN – USA

CASE TYPE – Rimmed straight plastic

CARTRIDGE LENGTH – 84.6 mm (3.325 in)

CASING LENGTH – 85.7 mm (3.375 in)

CASE HEAD DIAMETER – 21.77 mm (0.857 in)

CASE RIM DIAMETER – 23.37 mm (0.920 in)

LOAD – #4 Steel shot

LOAD WEIGHT – 56.7 g (2 oz – 875 grains)

PELLET DIAMETER – 3.30 mm (0.130 in)

NUMBER OF PELLETS – 380

PELLET WEIGHT –0.15 g (2.3 grains)

CASING WEIGHT – 11.6 g (180 grains)

TOTAL ROUND WEIGHT – 78.3 g (2.76 oz)

MUZZLE VELOCITY – 396 m/s (1300 fps)

NOMINAL BARREL LENGTH – 76.2 cm (30 in)

MUZZLE ENERGY – 4453 j (3284 ft/lb)

MUZZLE ENERGY PER PELLET – 11.7 j (8.6 ft/lb)

     Steel shot has been required for waterfowl and other hunting since 1976 in nine States of the Atlantic Flyway. Since steel is much less dense than lead, hunters would often use shot one or two sizes larger than they would have of lead shot. Other hunters might use steel shot of a smaller size than lead shot to increase the density of the shot pattern. The loading of steel shot in 10 Gauge magnum casings help insure that there is a sufficiently large quantity of shot for more effective hunting.