[PatC]

Can someone explain the difference between a 223cal. and a .556. I just found there a difference but don't know what it is !! Thanks Pat C.

[mjkeat]

There's quite a bit of information on this topic already floating around this very forum. Try a search.

[PatC]

Like most searchs it brought up everything but what I wanted!!

[Belltactical]

The 556 has a thicker wall than the 223 and is rated to higher pressure.

[mjkeat]

http://search.yahoo.com/search?p=difference+between+%22.223%22+%225.56%22& ei=utf-8&fr=chr-yie9

[hardluk1]

Buy a firearm in 5.56 and you can shoot .223 other way around you can blow up a firearm.

[jgand72]

Pretty much what others mentioned...To my knowledge the 5.56 casing is thicker than the .223 casing, which, in turn, creates more pressure. While a 5.56 chamber is built to handle the higher pressure, a .223 chamber is not. Because if this, you can shoot both 5.56 and .223 rounds in a gun chambered in 5.56. However, you do not want to shoot 5.56 rounds in a .223 chamber, as it is not built to handle the higher pressure, and can blow up your rifle.

[okdonk]

Lot of the threads about this topic already. Pls dont be lazy searching before posting.

[PatC]

Like most searchs it brought up everything but what I wanted!! 2nd Time!!!

[Quentin]

Search about how to do an effective Internet search.

Or just look at post #5!