The 30-30 Winchester, also known as the 30 Winchester Center Fire (30 WCF), is a cartridge that has been in use since the late 1800s. It is a popular choice for hunting deer and other medium-sized game. The bullet has a diameter of .308 inches and is loaded with smokeless powder to produce muzzle velocities of around 2,200 feet per second. The cartridge is commonly used in lever-action rifles, but can also be used in bolt-action and single-shot rifles.

The 30-30 Winchester cartridge has proven to be an effective and reliable round for hunting. It has a flat trajectory, making it accurate at ranges of up to 200 yards. The bullet is designed to expand upon impact, creating a larger wound channel for quicker and more humane kills. The 30-30 is also a relatively mild-recoiling round, making it easier for shooters of all skill levels to handle. Overall, the 30-30 Winchester is a time-tested round that has earned its place among the most popular cartridges for hunting in North America.