Black Orchid wrote:NATO are you so stoned you cannot even Google? If you read and then Googled you might even learn something, even about ammo!
You are being spoon fed
Here is the reality.
So what does it mean? For most shooters, the general rule of thumb as it relates to each round is that you should not fire 5.56 in a firearm chambered for .223 while you can safely fire .223 in a 5.56-chambered firearm. But it’s not that cut and dried.
There are several cases where shooters have documented firing 5.56 in their .223 firearms with no major problems and while a major malfunction, such as an explosion is possible, it is extremely unlikely to happen. You see part of what led to this way of thinking is because of the SAAMI standards for testing. Given a highly pressurized barrel, 5.56 rounds in a .223-chambered firearm are not a great idea. Most civilian .223 rifles on the market today, however, are much more forgiving than the barrels used for SAAMI standard testing so you’re likely to not only avoid major malfunctions but you’ll likely not even be able to tell the difference when firing 5.56 in a .223 Remington chambered AR-15.
Keeping that in mind, if you are relying on an AR-15 in a survival situation, you will likely want to invest in ammunition that is ideally suited for your specific chamber. Because of the pressure each round is loaded and the tolerances accepted by most modern sporting rifle barrels, even if not ideal in terms of wear-and-tear, you will likely be able to effectively neutralize a target using either caliber.
How to Tell .223 Remington and 5.56×45 Cartridges Apart
So you’re stuck in a place where ammo is scare and you come across rounds that appear to be appropriate for your firearm. Since .223 and 5.56 are nearly identical in physical appearance, how do you know if it’s .223 Remington or 5.56×45 ammo? The quickest and easiest way is to examine the head of the cartridge. If it’s 5.56, it’ll be stamped be stamped with a NATO insignia, which looks like a circle with a plus sign (+) inside of it. If it’s .223 Remington, it’ll say .223 Rem.
Photo Credit: TheFiringLine.com
Photo Credit: TheFiringLine.com
So Which Caliber AR-15 is Better?
The short answer about which caliber is best for you depends on your particular needs. The .223 Remington is the mostly widely produced caliber and while you likely won’t want to fire 5.56 in your firearm often, in an emergency you could easily get away with firing a few hundred rounds if necessary. The bottom line is this: if you want to be as safe as possible, always shoot .223 Remington ammunition. The .223 Rem cartridges will safely fit and fire in any rifle chambered for either .223 or 5.56.
LINK....
http://beforeitsnews.com/survival/2013/ ... 87996.html
Warrior.