I personally haven't had a problem shooting foreign manufactured ammunition although I have never fired Malaysian ammo. If you are purchasing it through a reputable source (Centerfire Systems or other large distributor) you are likely safe although there are no guarantees in life.
While they are similar, the cartridges are not the same, with slight differences in the shoulder angle, length of neck. It is safe to fire .223 in a weapon chambered for 5.56, but 5.56 ammo in a weapon chambered for .223 may NOT be safe.
Only .223 ammo. There are different bullet weights.
No. If it does not have 5.56 on the barrel then use .223 ammo.
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.
>.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.
yes. the 5.56 is the 223 caliber ammo.
NO the .223 is a totaly diffrent round than the .223 WSSM
No
.223 Remington ammo can be safely cycled through a 5.56x45 chamber - 5.56x45 ammo should not be cycled through a .223 Remington chamber. Both types may be cycled through a .223 Wylde chamber, but .223 Wylde may only be cycled through a .223 Wylde chamber.
you can fire both 5.56 and .223 ammo in a rifle chambered in 5.56...but not the other way around! In a rifle marked .223, you should fire .223 ammo only
The max range for .223 is about 300 yards.