Well you guys are correct mostly, but....
5.56 simply fires with higher pressures designed for military rifles. This is caused by different powder charges and 5.56 usually has a thicker casing, therefore in reloading you must be aware what they are. If you load a military case with a .223 spec and put it in a .223 rifle, you could be in for a surprise.
Gun powder burns, it doesn't explode.
And since they do chamber in both, great care must be taken when using it.
5.56 simply fires with higher pressures designed for military rifles. This is caused by different powder charges and 5.56 usually has a thicker casing, therefore in reloading you must be aware what they are. If you load a military case with a .223 spec and put it in a .223 rifle, you could be in for a surprise.
Gun powder burns, it doesn't explode.
And since they do chamber in both, great care must be taken when using it.
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