Popular magnum for long-range shooting and large game hunting. Excellent ballistics with manageable recoil. Military sniper standard.
Type: Rifle
Introduced: 1963, United States
Parent case: .375 H&H Magnum
Standardization: SAAMI
Bullet diameter: 0.308" (7.82 mm)
Case length: 2.62" (66.55 mm)
Overall length: 3.34" (84.84 mm)
Max pressure: 64,000 PSI
Rim type: Belted
Primer: Large Rifle Magnum
Typical twist rate: 1:10
Muzzle velocity: 2825–3290 fps
Muzzle energy: 3200–3800 ft-lbs
Effective range: 1200 yd
Common bullet weights: 150, 165, 175, 180, 190, 200, 220 gr
Primary use: Hunting, Military, Target
Production status: Active
Also known as: .300 Win Mag · .300 WM
History: Introduced by Winchester in 1963 as part of their magnum lineup. Quickly became most popular .30 magnum. Adopted by military snipers in 1990s as improvement over .308.
Notable firearms: Remington 700, Winchester Model 70, Accuracy International, Barrett MRAD
Military use: {"country":"United States","years":"1990s-present","conflicts":["Various sniper operations"]}
Similar cartridges: .300 PRC, 7mm Rem Mag