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custom ar-15

I had this built in around 1998.It has on the lower make cal 223-5.56.Can't remember doesn't that mean you can shoot 223 and 5.56.The barrel is a 1/9 twist and 18" bull stainless. Thanks for the help. Seem I can't remember anything anymore.
 
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Doesn't matter what the lower is marked, the barrel should state what exact chamber it is. But, 5.56 is loaded to a higher pressure than .223 as well as .223 chambers being a shorter throat and tighter fit (creating higher pressure).
 
The barrel is not mark.But was built by one of the guys from the arm shooting team.Out of Fort Brag N.C.He was the head gunsmith for the team.
 
If a competition rifle, is be willing to bet it will shoot 5.56 ammo just fine. I haven't seen a .223 chamber AR ever.
 
I had this built in around 1998.It has on the lower make cal 223-5.56.Can't remember doesn't that mean you can shoot 223 and 5.56.The barrel is a 1/9 tweet and 18" bull stainless. Thanks for the help. Seem I can't remember anything anymore.
Might want to check the barrel; I've seen lowers marked with a bunch of stuff and last I checked the lower isn't where t
If a competition rifle, is be willing to bet it will shoot 5.56 ammo just fine. I haven't seen a .223 chamber AR ever.

I've got one! Straight from DPMS. Works great with 50-55gr as mag length can be seated near the lands.
 
Might want to check the barrel; I've seen lowers marked with a bunch of stuff and last I checked the lower isn't where t


I've got one! Straight from DPMS. Works great with 50-55gr as mag length can be seated near the lands.

That's a first for me! My service rifle is 223 Wylde, but that handles 5.56 ammo just fine, although I only reload for it.
 
This question pops up every so often. The bottom line is that you can shoot pretty much anything that will fit in the chamber. There is much made of the fact that the SAMMI spec pressure for 556NATO is somewhat higher than 223Rem, but with barrels, bolts and bolt carrier groups made of the same materials is there a differnece?

To wit:
REAMER6.png


Which of the above is a 223Rem and which is a 556NATO? and does it make any difference?
 
This question pops up every so often. The bottom line is that you can shoot pretty much anything that will fit in the chamber. There is much made of the fact that the SAMMI spec pressure for 556NATO is somewhat higher than 223Rem, but with barrels, bolts and bolt carrier groups made of the same materials is there a differnece?

To wit:
REAMER6.png


Which of the above is a 223Rem and which is a 556NATO? and does it make any difference?[/QUOTE This is a big help for me.I guess I can shoot both.It was built to spec.The gunsmith did chamber it to spec and cut the landing him self.I never seen a ar-15 built in a .223 neither myself earthier.I want thank everyone for your help.Thank you again.
 
The difference in the two chamberings is the throat. Usually 223 has a short throat and 5.56 a long throat, and the Wylde is somewhere inbetween. From the chart above there are some discrepancies. The PTG 223rem match has a long throat, the Compass lake 5.56 has a short throat, and the 223 wylde has a long throat. The only problem chamber I see in that list is the 5.56 with a short throat.

The military 5.56 chamber is throated long to allow higher pressure loads to be shot through it. With a short throat, this pushes 5.56 cartridge pressures to dangerous levels, wheather people notice it or not. The wylde chamber is a comprimise, with a long enough throat to keep pressures safe, but short enough to allow decent accuracy. To make this long story short, do what Larry said and just shoot .223 ammo and you should be fine.
 
The difference in the two chamberings is the throat. Usually 223 has a short throat and 5.56 a long throat, and the Wylde is somewhere inbetween. From the chart above there are some discrepancies. The PTG 223rem match has a long throat, the Compass lake 5.56 has a short throat, and the 223 wylde has a long throat. The only problem chamber I see in that list is the 5.56 with a short throat.

The military 5.56 chamber is throated long to allow higher pressure loads to be shot through it. With a short throat, this pushes 5.56 cartridge pressures to dangerous levels, wheather people notice it or not. The wylde chamber is a comprimise, with a long enough throat to keep pressures safe, but short enough to allow decent accuracy. To make this long story short, do what Larry said and just shoot .223 ammo and you should be fine.

So what is my 224 with a Rem match chamber and a .169 freebore in which I run 90VLDs over 24.5 gr of Varget?
 
5.56 throat is longer and bigger diameter.
223 throat is shorter and tighter in diameter.
Wylde throat is longer like a 5.56 and tighter like a 223.

Basically.

Headspace is more generous in the 5.56
 
Well finely got the answer I was looking for.Ask with my brother in-law about it.He had one built to.It's chamber in the wylde.So now all is good.I can shoot .223 or 5.56 Again thanks to everyone for your help.
 

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