(SVU) 1,125 mm (44.3 in) (SWD-M) Barrel length 610 mm (24.0 in) (SVD, SWD-M) [2] 565 mm (22.2 in) (SVDS) 600 mm (23.6 in) (SVU) Cartridge 7.62x54mmR [2] Action Gas-operated , rotating bolt Muzzle velocity 830 m/s (2,723 ft/s) (SVD, SVDS, SWD-M) 800 m/s (2,624.7 ft/s) (SVU) Effective range 800 m