It was super interesting to me to learn that more people are buying rifles, especially the AR15 platform thus leading to more rifle ammunition sales. This brings in some confusion for new folks as there are 2 very common types of rifle ammunition. These two are the 5.56x45mm and .223 Remington.

The 5.56x45mm and .223 Remington are both intermediate rifle cartridges commonly used in military and civilian firearms. However, they have some differences:

In summary, the 5.56mm NATO cartridge is generally considered to be a more powerful round than the .223 Remington cartridge, but it is important to use the appropriate cartridge for your firearm to ensure safe and reliable operation.