yes. the 5.56 is the 223 caliber ammo.
It's "caliber" and most likely it will be in .223 or 5.56 mm
any 5.56 or 233 caliber ammo
The military version of .223 caliber. Can't use it if your barrel is not marked 5.56.
most minis are .223 caliber aka 5.6 NATO <><><><><> Although similar, the .223 Remington and the 5.56x45 are NOT the same cartridge. A rifle chambered for 5.56 can shoot .223 safely. The reverse is not true- a rifle chambered for .223 MAY be unsafe with 5.56 ammo- it has a slightly longer cartridge case, and is loaded to higher pressures. Safe bet is to check the caliber marked on the firearm, and stick with that.
Depends. What is the caliber of the AR-15 rifle? If it marked 5.56, yes. If it marked .223, no. While you MAY fire 5.56x45 ammo in a .223, they are NOT the identical cartridge, and it is not a good (or safe) practice. .223 ammo can be safely fired in a rifle chambered in 5.56 mm. The 5.56 chamber is cut a bit longer than .223 to help insure operations in the field in the presence of dirt, etc. 5.56 NATO ammo is also loaded to a higher pressure than .223. So- to recap- 5.56 in a .223- NO. .223 in a 5.56- yes.
Only .223 ammo. There are different bullet weights.
In general, no. The .22 LR is a straight sided rimfire cartridge 1 inch long. The .223 is a bottlenecked centerfire cartridge almost 3 inches long. Totally different. The 22 LR CAN be shot in a .223 by the use of a special adapter.
No. If it does not have 5.56 on the barrel then use .223 ammo.
The AR 15 is a rifle, not a caliber. the .223 is a caliber. Usually the AR-15 is made in caliber .223.
No But the Caliber is the same but theres more powder in the 223
No. Dimension-wise, they are similar, but there are differences in neck angles and case thickness. .223 Remington ammo can be fired in a 5.56 chamber, but 5.56 ammo should never be fired through a .223 Remington chamber.