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Safe to shoot 5.56 in #3 .223 action?

This is a discussion on Safe to shoot 5.56 in #3 .223 action? within the Ruger Single-Shot forums, part of the Rifle & Shotgun Forum category; Can the #3 .223 action handle the higher pressure of a 5.56 military round?...


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Old November 19th, 2011, 12:36 PM   #1
 
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Safe to shoot 5.56 in #3 .223 action?

Can the #3 .223 action handle the higher pressure of a 5.56 military round?



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Old November 19th, 2011, 01:05 PM   #2
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Yes
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Old November 19th, 2011, 01:17 PM   #3
 
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You cannot shoot a 5.56 NATO round in a .223 chamber. You can shoot a .223 round in a 5.56 chamber. It's not a matter of pressure, it's a matter of case dimensions.
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Old November 19th, 2011, 01:26 PM   #4
 
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I have yet to see a .223 that a 5.56 wouldn't fit in the chamber. I'm not saying that they are all like that, but I have yet to see one that isn't. The headspacing is so minor different that I'm not sure you would feel it not fit as the action closed. And I'm not sure you can put enough powder in a .223/5.56 to blow up a #1/#3... I could be wrong on that so don't take me as quoting the gospel on that one. But I did have at one point a nice DPMS AR that was chambered in .223 and would allow 5.56 in the chamber despite being sold as a .223 only and so marked. I sold it to a guy that wanted it more than I did and since I used to buy a lot of gun show milsurp back then and never wanted to mess up and put any into that rifle. I have no idea if it would have ruined it or not. But it would drop right in and the bolt closed on it no problem.
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Old November 19th, 2011, 01:27 PM   #5
 
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What jdrancher said....Case dimensions and the 5.56 NATO has higher pressure than a .223...
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Old November 19th, 2011, 02:20 PM   #6
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Quote:
Originally Posted by jdrancher View Post
You cannot shoot a 5.56 NATO round in a .223 chamber. You can shoot a .223 round in a 5.56 chamber. It's not a matter of pressure, it's a matter of case dimensions.
And yet all the die manufacturers list the same dies for both.
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Old November 19th, 2011, 02:36 PM   #7
 
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I always shot both and the #1 still made says it can.556/223 is a Remington gimmick to sell guns fourty years ago
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Old November 19th, 2011, 03:02 PM   #8
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Unless it's Wylde chambered do not shoot 5.56 in a .223 chambered gun.
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Old November 19th, 2011, 03:13 PM   #9
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Unless it's Wylde chambered do not shoot 5.56 in a .223 chambered gun.
Give one valid reason to support this myth.
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Old November 19th, 2011, 07:13 PM   #10
 
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TMD....as requested...

The Gun Zone -- SAAMI on 5.56 v. .223 Remington

The 5.56 should not be shot in a .223 chamber. It could be a mistake that causes loss of property or life.
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Old November 19th, 2011, 07:26 PM   #11
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Originally Posted by Spring View Post
TMD....as requested...

The Gun Zone -- SAAMI on 5.56 v. .223 Remington

The 5.56 should not be shot in a .223 chamber. It could be a mistake that causes loss of property or life.
Should and Could don't mean squat. I can pull up a hundred more articles on the net that say the same thing. Reality is its never been an issue. Show me a .223 that can t handle .556.

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Old November 19th, 2011, 11:45 PM   #12
 
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Don't with Remington all others understand what folks want and think they are buying.
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Old November 20th, 2011, 05:28 AM   #13
 
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Quote:
I can pull up a hundred more articles on the net that say the same thing. Reality is its never been an issue. Show me a .223 that can t handle .556.
The SAAMI is the sporting arms and ammunition manufacturing governing body that is sets industry standards. I guess you can show me "hundreds of articles" that say the same thing is because its correct?

If the burden of proof is firing a .223 barrel until it blows, knock yourself out. Look forward to hearing about your results. I see things like "studies" and "research" have no meaning so only personal experience matters, right?

Until then, I would suggest the OP follow the current practice set by the SAAMI.
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Old November 20th, 2011, 10:27 AM   #14
 
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I appreciate the answers thus far.

I, of course, was aware of the admonitions against shooting a 5.56 in a .223 weapon so why did I ask the question? I, perhaps erroneously, was thinking along the lines of how it is sometimes allowable and safe to reload a "hotter" round than normal depending upon action strength and make/model...the 5.56 being a "hotter .223 round" for purposes of the question? While I might feel comfortable asking about a falling block action I probably would not for other action designs but still would consider it only if there was credible evidence that it was OK to do so which is so far what I have been unable to find. I suspect that asking the manufacturer of a specific firearm the question would only result in the lawsuit safe answer which may not have to do much with reality.
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Old November 20th, 2011, 10:02 PM   #15
 
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I have a T/C Contender carbine chambered for .223 Rem. The barrel is made by Bullberry and has a minimum spec chamber. I shot a 2 rounds of 5.56x45 in it. When I broke open the action after the shot, the extractor failed to extract the case and slipped over the extractor groove. I had to tap out the case with a cleaning rod. I tried one more just to make sure it was not a freak round. I got the same results. Then I tried a .223 Rem. round and it extracted normally. You can probably get away with it in a #1 because the chamber is most likely not minimum SAAMI spec and the extractor is strong. But the fact of the matter is that the 5.56 is loaded to considerably higher pressure than the .223 Remington.
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