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The two most common AR-15 calibers on the U.S. market are the .223 Remington and the 5.56×45mm NATO. Eugene Stoner developed the .223 Remington, based on the .222 Remington sporting cartridge, in cooperation with Sierra Bullets. In September 1963, the U.S. military type-classified the .223 Remington cartridge, using a 55-grain bullet, as “Cartridge, 5.56mm Ball, M193.” 

In 1964, Remington introduced the .223 cartridge to the sporting market. Several companies now manufacture sporting, and tactical carbines and rifles chambered in both cartridges. But which round is more suitable for your purposes?

Gun owners spend a great deal of time choosing the ideal firearms and accessories for various applications, such as hunting, competition, training, or plinking. However, the conversation surrounding equipment for self-defense isn’t complete without first discussing ammunition.

Even if you have the ideal weapon platform for home defense, concealed carrying, and general personal protection, your ability to defend yourself successfully directly depends on the type and quality of your ammunition. Here are today’s best self-defense rounds for the most popular calibers.

Although nearly identical in dimensions other than length, the 38 Special and 357 Magnum cartridges are different in many regards. Yet, their similarities are one of the signs of a shared heritage and history.

Handguns, like all types of firearms, fire a variety of different types of ammunition. The type of ammunition you need varies considerably depending on your intended application. Learn about armor piercing bullets, FMJ vs TMJ, What is a Caliber, Bullet Grains, and more...