These ballistics stats mean that the 223 is accurate and has less jump. The bullet also drops about 64 inches due to gravitational pull. The energy loss at this point is about 1000 pounds. 223 BallisticsĮxternal ballistic tests on the 223 using a standard 55gr bullet leaving the barrel at 3,215fps reveals that the 223 fps slows down by less than half of the velocity at a 500-yard distance. 223 Remington and 5.56 NATO rounds, but this is largely dependent on load selection. There are ballistic differences between the. Whereas PMC 5.56 NATO 55-grain ammunition has a velocity of 3,270 fps and produces 1306 ft/lbs of energy, and PMC 5.56 NATO 62-grain ammunition has a velocity of 3,100 fps and 1,323 ft/lbs of energy. This means the 5.56 travels a longer distance when the two are shot in the same atmospheric conditions. The 556 is also a little heavier, which means that the effect of the atmosphere on its trajectory is less than it is on the 223 trajectory. Although the 223 can be shot from the 5.56 chamber, it will attain a lower speed due to its lower pressure. The 556 packs more pressure and gun powder, meaning that it travels faster and is more accurate. Note that the 5.56 cannot be shot on a 223 chamber but the 223 chamber can be shot from a 556 due to the pressure difference. 223 vs 556 BallisticsĪlthough they are of the same size, the two bullets have different results when shot from a rifle. The longer throat allows more holding capacity for gun powder in the 5.56, thus implying that it has a higher performance as compared to the 223 Remington. 125 inches in length when compared with that of the 223 Remington bullet. The 5.56 also has a longer throat with a difference of. Going by SAAMI specifications, the lower pressure 223 can be used in the 5.56 chamber, but the 5.56 cannot be used in the lower pressure chamber for the 223 Remington. The 5.56 has a higher pressure measuring at 58,000 psi as compared to the 233’s 55,000 psi. Here is some more information about pressure levels associated with these two rounds. Selecting the right ammo to safely fire in your weapon is a result of various studies and testing methods. The standardization helps troops in the field to share ammo with allies that use the same standardized ammo. Their standards are for military combat situations. NATO grade bullets are military grade and not meant for recreational use such as a hunting game or shooting sports. The NATO stands for North Atlantic Treaty Organization that is a group of countries that have an agreement to standardize their ammo. When you go to buy rifle ammo, you will probably come into some that are labeled NATO rounds while others are not. The “Rem” in 223 Rem is short for Remington, the ammunition and firearms company that originally developed the caliber in the 1960s. Ensure that you only load ammo that is supported by the gun you are using to avoid damaging the gun. Guns have specifications that guide you on the bullet size that is compatible for use with the specific gun. The 223 inscription on a bullet means that the bullet’s base diameter is. This firearm is commonly chambered for 5.56 mm ammo because it is a descendant of the M-16 rifle. 223 caliber “civilian” version of the round shortly thereafter in 1964.Ī very popular sporting rifle for today’s enthusiasts is the AR-15. This “small caliber, high velocity” round was desirable because it helped overcome weight and control issues present in the 7.62 x 51 mm round that was used in the previous-generation M-14 rifle.Īfter the official adoption of the 5.56 x 45 mm round as the NATO standard in 1963, Remington introduced a. The 5.56 x 45 mm round first came about during the late 1950s as an experimental cartridge for the U.S. Giving birth to the 223 which is civilian version equivalent to the 5.56 military-grade round. When the military officially adopted the 5.56 x 45, the manufacturing company called Remington created their own civilian version of the 5.56. It resolved problems like eased control and heavyweight which was regularly experienced in the 7.63 x 51 mm rounds that were utilized in the M-14. Ease of use and effectiveness was one of the major selling points of this round. In the 1950s, the 5.56 x 45 round made its debut and was developed as an experimental cartridge and tested on the U.S Military M-16 Assault Rifle. 223 and 5.56 ammunition.Ī lot of people, especially novices, have an assumption that these two pieces of ammo can be interchanged, in reality, they are not. In this article, we will be providing an in-depth review of the similarities and differences between.
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