Another 556 or 223 thread
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Another 556 or 223 thread


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Old 06-12-2013, 10:07 PM   #1
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Default Another 556 or 223 thread

My new mini has 223 inscribed on it but the instruction manual I have for its serial number says its chambered for either. So which is it?
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Old 06-12-2013, 10:50 PM   #2
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Normally, a barrel that has 5.56 can shoot either 5.56 or 223. I suggest contacting the manufacture of the barrel assy.
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Old 06-12-2013, 10:59 PM   #3
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go with what is inscribed on the barrel. the manuals are written for many models and may not apply specifically in all respects to your gun. a decent gunsmith can ream a 223 out to 556. personally i would have it reamed to wylde chamber spec if i was going to do it. contacting ruger tech support with your serial number will tell you also. that is if it was never rebarreled...
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Old 06-13-2013, 01:17 AM   #4
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Your mini 14 can shoot 223 or 5.56, the target model is the only model with a true 223 Rem chamber.
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Old 06-13-2013, 02:25 AM   #5
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Listen to tri70. He knows what he's talking about!

As long as it's not a "target model", the chamber will accept .223 or 5.56.
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Old 06-13-2013, 01:26 PM   #6
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Quote:
Originally Posted by tri70 View Post
Your mini 14 can shoot 223 or 5.56, the target model is the only model with a true 223 Rem chamber.
correct! says so in the owner's manual! both run fine through my mini!
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Old 06-13-2013, 10:30 PM   #7
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Tri,

Is exactly correct. Standard Mini = 5.56 NATO Chamber. Target Model = 223 Remington Chamber. The 5.56 chamber has a longer lead than the 223 Remington chamber. So if you would shoot a 5.56 in a 223 Remington Chamber the Chamber Pressure well exceeds what it should. Not to mention military mil-spec ammo is hotter than commercial ammunition which adds to the problem.

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Old 06-14-2013, 02:06 AM   #8
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Thanks guys! Kinda what I thought but I wanted to be sure. Didn't want to have to start buying both 556 for my AR and 223 for my mini. Now I can just get whats cheapest and run it through both.
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Old 08-27-2013, 02:16 AM   #9
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It's a little deceptive, because while the

barrel isn't labeled "5.56", many Mini-14

variants, like the Ranch Model, are specifically

listed to shoot both.
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Old 09-27-2014, 12:10 PM   #10
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^^^^^^^^^^
This would be why, when I got my

AR, I made sure it was labeled 5.56.

With today's ammo woes, the last thing you

want is limitations.
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