What is .275 h&h magnum?

The .275 H&H Magnum, also known as the 7x57mm Mauser, is a medium to long range rifle cartridge that was developed in 1912 by British gun makers Holland & Holland. It is a rimless, bottleneck cartridge that is based on the 7x57mm Mauser cartridge, but with a longer case and a thicker cartridge wall.

The .275 H&H Magnum is a versatile cartridge that can be used for hunting medium to large game at ranges up to 500 yards. It has a relatively flat trajectory and good accuracy, making it popular among hunters and sport shooters alike.

The cartridge uses a .284" diameter bullet that typically weighs between 140 and 175 grains, with a muzzle velocity of around 2,800 to 2,900 feet per second. Its relatively light recoil also makes it a good choice for those who are sensitive to recoil or who need to shoot quickly and accurately.

The .275 H&H Magnum is still in use today, although it has been largely eclipsed by other, more powerful cartridges such as the .300 Winchester Magnum and the .338 Lapua Magnum. However, it remains a popular choice among hunters and shooting enthusiasts who appreciate its versatility, accuracy, and mild recoil.