Ar-15 for one. You can use .223 ammo in 5.56 barrells as well.
5.62mm I believe.
Only if it is marked ".223 Remington" on the barrel.
There are various types of ammunition. There are also particular guns that use the recently developed 30 mm ammunition. Among them are aircraft guns and armoured vehicle guns.
No. They have matching dimensions, but differ in other areas, such as neck angles. .223 ammunition can be safely fired in a 5.56x45mm chamber; 5.56x45 ammunition is not recommended to be used in a .223 Remington chamber.
The equivalent of 5.65 mm ammunition is .22 caliber ammunition.
Ammunition shelf's were where the soldiers kept their ammunition and guns.
While outwardly they appear the same and they both use the same bullet, the 5.56 has thicker case walls and a smaller capacity for powder. The 5.56 is the standard NATO round and guns chambered in 5.56 will shoot .223 with no problem at all. The opposite is not always true because the 5.56 will produce higher chamber pressure and it's not always safe in all guns chambered in .223. Also, you cannot use .223 reloading dies for 5.56 brass. The brass will not cycle through the die at all.
Single shot, bolt action, pump, semi-auto,
Yes it does, unless your barrel is stamped .223 .
Stored in moderate temperatures and low humidity, ammunition can be stored for decades.
The guns are ruined. The ammunition will get hot enough to go off.
any gun besides airsoft,bb guns, Paintball, and pellet guns or anything above a pellet gun (22's 223's and so on) use gunpowder