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NAME – 40x46mm XM463 High Explosive, Smokeless, Flashless

CALIBER – 40x46mmSR

TYPE – Low velocity, ground burst, high explosive, fragmentation, low signature

YEAR OF INTRODUCTION – 1964

COUNTRY OF ORIGIN – USA

IDENTIFYING COLOR CODE – Green cartridge case with yellow ink markings, Olive drab projectile body with yellow ink markings, Black flat-pointed ogive

CASE TYPE – XM170 (Modified M118) Semi-rimmed straight walled

CARTRIDGE LENGTH – 9.89 cm (3.894 in)

CASING LENGTH – 46.1mm (1.817 in)

CASE HEAD DIAMETER – 41.097 mm (1.618 in)

CASE RIM DIAMETER – 43.54 mm (1.714 in)

PROJECTILE TYPE – Flat-nosed aluminum-bodied projectile with wrapped, notched, square wire fragmentation body (M406 HE Projectile)

PROJECTILE DIAMETER – 41.15 mm (1.620 in) at rotating band

PROJECTILE WEIGHT – 0.170 kg (6 oz)

POWDER WEIGHT – 0.600 g (9.26 grains) M9 double-base flake mortar powder

FILLER – Composition B

FILLER WEIGHT – 0.032 kg (1.13 oz)

FUZE TYPE – M551 point detonating

CASING WEIGHT – 0.064 kg (2.26 oz)

TOTAL ROUND WEIGHT – 0.234 kg (8.25 oz)

MUZZLE VELOCITY – 75 m/s (247 fps)

NOMINAL BARREL LENGTH – 35.6 cm (14 in)

MINIMUM (ARMING) RANGE – 14 to 27 m (45 to 90 feet)

MAXIMUM RANGE – 400 m (437 yards)

EFFECT – Blast and fragmentation at impact point

AREA OF EFFECT – 5 m (5.5 yards) burst radius

MANUFACTURER –

STATUS – Field evaluation

SERVICE – US Military and Special Operations Forces

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