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NAME – 13.2x52mmR – .54 Billinghurst-Requa
TYPE – Rimmed outside-primed metallic case
YEAR OF INTRODUCTION – 1861
COUNTRY OF ORIGIN – USA
CASE TYPE – Rimmed straight
CARTRIDGE LENGTH – 6.50 cm (2.56 in)
CASING LENGTH – 5.18 cm (2.04 in)
CASE HEAD DIAMETER – 13.92 mm (0.578 in)
CASE RIM DIAMETER – 18.80 mm (0.740 in)
BULLET TYPE – Conical lead ball
BULLET DIAMETER – 13.51 mm (0.532 in)
BULLET WEIGHT – 26.83 g (414 gr)
POWDER WEIGHT – 4.18 g (64.5 gr) Black powder
CASING WEIGHT – 19.18 g (296 gr)
TOTAL ROUND WEIGHT – 50.22 g (775 gr)
MUZZLE VELOCITY – 267 m/s (875 fps)
NOMINAL BARREL LENGTH – 61 cm (24 in)
MUZZLE ENERGY – 954 j (704 ft/lb)
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