.300 Win Mag Rifles is built in compatibility with .300 Winchester Magnum, a famous, belted, bottlenecked magnum rifle cartridge. The .300 Winchester Magnum cartridge, engineered to fit in a standard length action and based on the .375 H&H Magnum, was brought into existence in the year 1963 by the Winchester Repeating Arms Company. The versatile cartridge is an esteemed choice of target shooters, military units and law enforcement departments (for long range sniping and marksmanship), and the hunting community (for long range performance with better bullet weight compared to other .30 caliber cartridges). It is also known as .300 Win Mag or 300WM (7.62x67mm), and made to accept .30 caliber (7.62 mm) bullet.Take your pick from the vast array of .300 Win Mag Sniper Rifle for sale from manufacturers such as Tikka, Sako, Christensen Arms, Kimber, Blaser, Armalite, Desert Tactical and more. Buy now and enjoy superior accuracy and reliable results.