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Old 04-21-2009, 07:42 AM   #11
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Ruger Mini manuals are right at the Ruger website.

They do state that both .223 and US 5.56 is acceptable.

I just sold my Mini 14 because .223 ammo prices will continue to be so high.
Have 1,800 rds. of Wolf to trade for an equal number of x39 (non-corrosive).
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Old 04-26-2009, 11:38 PM   #12
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Default either 223 or 5.56

the 223 is a hotter load cause of the cases are thinner and the 5.56 uses a thicker case. I spoke with the armorer instructor for colt, he said the 5.56 is the exact same demensions on the outside. I guess the military had to come up with metric name for the round
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Old 04-27-2009, 12:00 AM   #13
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Internal case dimensions are not the same. The biggest difference is the longer leade of the 5.56mm, which affects pressure. Whether you can fire 5.56mm in a .223 chamber is an ongoing back and forth. Whether they are the same round or not is non debatable. They are not.
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Old 04-27-2009, 12:01 AM   #14
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Both 5.56 or .223 shoot in the mini-14 fine. I've used both for many years now for this rifle with no problems at all. Seems the 63 gr. bullets are a bit more accurate then the 55 gr. bullets are, but other than that, shoot as much of either 5.56 and .223 that you want. Very hard to injure the mini's as they are a relitively close scaled down version of the garrand action which is very robust.
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Old 04-27-2009, 12:16 AM   #15
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The steel case ammo supposedly has hard primers that have reportedly broken firing pins in mini 14s
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Old 05-02-2009, 11:20 AM   #16
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5.56 Nato causes more muzzel jump then the tamer .223,puts more wear on the gun as well,but really,be it 5.56 or .223 its a scrawny ****y round thats under-powered and more often then not don't do what its supposed to.
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Old 05-08-2009, 04:42 PM   #17
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No problem at all....other than the fact that the mini-14 wont shoot anything very accurately!
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Old 05-09-2009, 04:26 PM   #18
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denjask:

That must take lots of rounds. My Mini 14 was built in '90 and used about a thousand rounds since I bought it in Feb '08.

Hullcreature:
But it will shoot more reliably than some AKs. All of my ammo was Wolf or a little S. Bear, and it never had a single ftf etc. Zero.
Also, it never had a single mis-feed with a newer polymer 30-rd. Promag, despite the fact that it did not fit tightly.
My Mini was 100% reliable , more than an AK with just forty rounds which I watched a buddy use.

Having two Minis, only sold it to justify buying my first "Jungle Carbine".

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Old 05-10-2009, 06:35 PM   #19
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Got my mini 14 in 1979. It has only been fed surplus 5.56mm ammo. No problems to date.

If I am not mistaken the mini 14 was originally targeted for law enforcement and military. Makes sense that it would reliably feed and shoot 5.56 ammo.
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Old 05-13-2009, 02:46 AM   #20
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I just checked the manual online. It says "The mini-14 is designed to use either standardized U.S. military or factory loaded .223 (5.56) cartridges manufactured in accordance with U.S. Industry practice."

I have been looking into investing in one, that pretty well answers it for me.
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