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7.62x42mm SP-4
NAME – 7.62x42mm SP-4
NAME (COMMON) – SP-4 Silent Cartridge – Spetsial’nyy kartridzh 4 [Special Cartridge 4]
TYPE – Captured piston suppressed cartridge
YEAR OF INTRODUCTION – 1983
COUNTRY OF ORIGIN – USSR
CASE TYPE – Rimless bottleneck
CARTRIDGE LENGTH – 41.9 mm (1.65 in)
CASING LENGTH – 41.9 mm (1.65 in)
BULLET TYPE – Flat nosed steel cylinder
BULLET DIAMETER – 7.59 mm (0.299 in) [Body], 7.82 mm (0.308 in) [Rotating/Driving Band]
BULLET LENGTH – 28.4 mm (1.12 in)
BULLET WEIGHT – 9.97 g (153.8 grains)
POWDER WEIGHT – 0.23 g (3.5 grains)
CASING WEIGHT – 6.95 g (107.3 grains) with piston
TOTAL ROUND WEIGHT – 23.2 g (358 grains)
MUZZLE VELOCITY – 189 m/s (621 fps)
MUZZLE ENERGY – 180 j (133 ft/lb)
Piston – 8.91mm dia, 5-8mm long
124.6 ave db
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Weapons
Projectile Weapons
Pistols
Submachine Guns
Rifles
Sniper Rifles
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Shotguns
Area Weapons
Flamethrowers
Grenade Launchers
Mortars
Recoilless Rifles and Launchers
20 and 30mm Cannon
Rocket and Missile Launchers
Miscellaneous Weapons
Hand and Rifle Grenades
Pyro & Tear Gas
Other
Ammunition
Pistol Ammunition
Shotgun Ammunition
Rifle and Machine Gun Ammunition
Projected Grenades
Explosives
Low Explosives
High Explosives
Demolition Charges
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