5.56 in .223 chambered gun ???

[FMJMIKE]

What happens when you fire a 5.56 X 45 round in an AR-15 chambered in .223 Remington ???

 

[Hatterasguy]

You can damage the rifle, 5.56 is loaded to higher pressures.

Its fine to fire .223 in a 5.56 rifle but not the other way around.

 

[X-Rap]

The world as we know it come to an end.
Glad you brought this topic up as its never been discussed before.

 

[medalguy]

It goes bang and the bullet goes downrange. No problem.

This has been cussed and discussed ad nauseum in this and other forums for years. I have done it, I know friends who have done it, and I have never, ever, heard of a gun being damaged. That MIGHT be a problem ONLY if you are loading the 5.56 at or above the maximum pressure. Actually there is not likely to be a problem at all because of where the pressure is measured in relation to the cartridge but that's a long discussion and really not warranted here.

 

[FMJMIKE]

It fires .....but does the spent casing eject from the chamber ???

 

[X-Rap]

It fires .....but does the spent casing eject from the chamber ???

They do in mine.

 

[FMJMIKE]

I have a new AR-15 that is suppose to be a 5.56 chambered rifle. However 5.56 X 45 Radway Green SS109 is failing to eject the spent casing when fired. The casing has the rim ripped off after I tap it out of the chamber with a cleaning rod. Just wondering if this could be caused by the rifle being chambered in .223 and not 5.56 as advertised ???
Oh....I cleaned the chamber..Ammo is clean..................

 

[0V3RC10CK3D]

Just shoot .223 out of everything.

 

[eddism]

Cheap ammo will do this. I had this happen to me using WOLF.

 

[MoDerN_WarRioR]

My gun actually says on the side of the lower... Cal .223-5.56MM and it has never never ever ever gave me any issues of shooting either.

0V3RC10CK3D Has good advice!

 

[briansmithwins]

With an AR the lower can say anything: It has no bearing on what the barrel is chambered for.

5.56 in a .223 is on the SAMMI website as being an unsafe combo, Who are you going to believe, us or people that actually get paid paid to know this stuff?

http://www.saami.org/specifications_and_information/publications/

BSW