Orlando night club shooting

oldngray

nowhere special
Actually 5.56, .223 is a tad different. You can shoot .223 in a rifle with the barrel marked 5.56 but cant shoot 5.56 in a rifle marked .223

You CAN shoot 5.56 ammo in a .223 chamber but not recommended. Mostly because a .223 has a tighter chamber and it would have increased pressures.
 

Bottom rung

Well-Known Member
.223 about six thousand psi less than 5.56. A lot less oomf if you will. Other than a shorter chamber throat and a few k psi in a .223, they are the same.
 
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