The term "30-30" typically refers to a type of rifle cartridge, specifically the .30-30 Winchester. This cartridge was introduced in 1895 and is known for its versatility in hunting medium-sized game, such as deer. It features a bullet diameter of .30 inches and is loaded with 30 grains of powder, hence the name "30-30." The .30-30 Winchester is often associated with lever-action rifles, particularly the Winchester Model 94. Its popularity stems from its effective range and manageable recoil, making it a favorite among hunters and sport shooters. The cartridge remains widely used today for both hunting and target shooting.