What rifle has the longest range?

Answer 1

The Barrett .50 caliber is currently the most accurate, largest caliber, military sniper rifle in active service in the world. Here are some specs:

M82A1

• Caliber: .50 BMG (12.7×99mm)
• Operation: short recoil, semi-automatic
• Overall length: 57 inches (145 cm) w/ 29 inch (73.7 cm) barrel or 48 inches (122 cm) w/ 20 inch (50.8 cm) barrel
• Barrel length: 508 millimeters (20.0 in) or 737 mm (29.0 in)
• Feed device: 10-round detachable box magazine
• Sights: Flip up, optics vary by user preference
• Weight: 30.9 lbs (14.0 kg) w/ 29 inch (73.7 cm) barrel or 29.7 lbs (13.5 kg) w/ 20 inch (50.8 cm) barrel
• Muzzle velocity with 660 grain, 42.8 g projectile: 853 m/s (2,800 ft/s)
• Maximum effective range: 1,800 m (5,900 ft)
• Expected accuracy: Sub-MOA with match ammo
• Unit replacement cost: $8,900.00 US

M82A2

• Caliber: .50 BMG (12.7×99mm)
• Length: 1,409 mm (55.5 in)
• Barrel length: 737 mm (29.0 in)
• Weight (unloaded): 14.75 kg (32.5 lb)
• Maximum effective range on equipment-sized targets: 2,000 m (6,600 ft)
• Muzzle velocity: 900 m/s (3,000 ft/s)
• Magazine capacity: 10 rounds
• Unit replacement cost: $6,000
• Status: Prototype seeing combat in Iraq

M107

• Caliber: .50 BMG (12.7x99 mm)
• Length: 1,448 mm (57.0 in)
• Barrel length: 737 mm (29.0 in)
• Weight (unloaded w/ scope): 12.9 kg (28.4 lb)
• Magazine capacity: 10 rounds
• Weight of magazine: 1.87 kg (4.1 lb)
• Accuracy: 3 Minutes of Angle (MOA)
• Muzzle velocity: 853 m/s (2,800 ft/s)
• Maximum Effective Range: 1,830 m (6,000 ft)
• Maximum Range: 6,812 m (22,350 ft)