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What is the difference between .223, 5.56, and .300 Blackout?

We wanted to briefly let you in on the differences in these three ammunition calibers. Understandably, there are far more descriptive explanations out there, but if you're looking for something straight to the point, keep reading.


The .223 Remington, 5.56x45mm NATO, and .300 Blackout are all popular cartridge options for rifles, but they have some important differences that you should be aware of. Understanding these differences can help you choose the right ammunition for your specific needs.




.223 Remington:

The .223 Remington is a caliber that was originally developed for the civilian market, but it has also been adopted by military and law enforcement agencies around the world. It is a popular choice for hunting, target shooting, and self-defense due to its relatively low recoil and good accuracy.

One important thing to note about the .223 Remington is that it is not interchangeable with the 5.56x45mm NATO cartridge. While the two rounds are similar in size and shape, they are not identical, and using the wrong cartridge in your rifle could result in damage or even injury.




5.56x45mm NATO:

The 5.56x45mm NATO cartridge is a military-grade round that is used by armed forces around the world. It is similar to the .223 Remington, but it has slightly higher pressure and a different internal design.

Because the 5.56x45mm NATO cartridge is designed for military use, it is generally more expensive and harder to find than the .223 Remington. However, it is also generally more reliable and has better terminal performance, making it a good choice for self-defense and tactical applications.




.300 Blackout:

The .300 Blackout is a relatively new caliber that was developed for use in the AR-15 platform. It is designed to provide good terminal performance and accuracy, while also allowing the rifle to be used with a suppressor.

One of the main benefits of the .300 Blackout is that it can be used with a wide range of bullet weights, from subsonic to supersonic, allowing the shooter to choose the best load for their specific needs. It is also compatible with standard AR-15 magazines, making it easy to use with existing rifles.



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