7mm Remington Magnum
Although this cartridge recently celebrated its 50th birthday, it’s only gotten better with age (and technological improvements). Because of its excellent reputation, the selection of .284 bullets out there is massive.
The amount of power behind the .284 projectile is impressive as well, pushing the 160-grain version at over 3,000 fps. According to Sniper Central, the 7mm is recommended for military applications out to 1,000 yards. However, its history as a sniper round is primarily within the US Secret Service, not the military.
The combination of velocity and knockdown power has made the 7mm Rem-Mag one of the most popular rounds for big game hunters. The “7 Mag” offers advantages over the .308 at distances, but it is often overshadowed by the bigger .300 Win Mag (including in the recoil department).
Just like with the .300 Win Mag, the popularity of the 7mm Mag is its own benefit. It’s widely available in a wide range of configurations.