The .30-06 Springfield is a popular rifle cartridge developed in 1906 for the United States military. It was designed to replace the earlier .30-03 cartridge and became the standard issue for American forces during both World Wars and the Korean War. The cartridge is known for its versatility, capable of firing a variety of bullet weights and types, making it suitable for hunting and target shooting. The .30-06 features a case length of 63.3 mm and is typically loaded with bullets weighing between 150 to 220 grains. Its performance is characterized by a flat trajectory and significant stopping power, which has contributed to its enduring popularity among hunters and sport shooters.