5.56 bolt rifle

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deadeye1122

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Do any of the current,modern rifle makers offer a true 5.56 bolt action rifle? Just curious. Thx deadeye



forgot to add not custom.
 
if by 556 you mean specifically not chamber marked 223rem, i dunno. but you could call remington and ask them if it's safe to shoot 556 in their 700PSS. i imagine it is ok
 
The European counter part to the American SAAMI considers the .308/7.62NATO and the .223/5.56 NATO to both be the same cartridge.

The only difference between the .223 and 5.56 is how these two rifle are throated and what bullet weight they were designed to shoot.

The NATO pressure testing standards are taken at the neck of the cartridge case and SAAMI and CIP measure the pressure at the approximate middle of the case and this is why you see a difference in chamber pressure. If both types of ammunition were tested the same you would see no difference in chamber pressures.

I have a Stevens 200 with a 1 in 9 twist, it is throated longer and can shoot both types of ammunition without a problem. The parent cartridge was the .223 and NATO uses the metric designation for the "same" cartridge.

556natochamberversus223remingtonchamber02.gif

223reamers-1.gif
 
Yes taliv I meant specifically 5.56. I reason I asked is that this A.M. I helped a friend who runs the firearms side of the LGS drive out a (surplus?) green case out of a Rem 700. Marked .223 on the rim but plenty of signs of over pressure. Like I said just curious. Thx deadeye
 
Green as in painted green? Like wolf or other Russian steel-cased garbage? I'm not surprised it got stuck. Happened to me with 9mm.
 
Why anyone would want to shoot that crappy steel cased ammo out of a quality bolt action rifle is beyond me. I can understand shooting it in a platform like an AR or Mini or any of the other 5.56 EBR's for cheep practice ammo but a quality bolt action, why?
 
The NATO pressure testing standards are taken at the neck of the cartridge case and SAAMI and CIP measure the pressure at the approximate middle of the case and this is why you see a difference in chamber pressure. If both types of ammunition were tested the same you would see no difference in chamber pressures.
Not exactly. If you measure a 5.56 NATO round in a .223 Rem chamber, the .223 Rem chamber's tighter dimensions will cause the pressure to spike. If you measure a .223 round in 5.56 NATO chamber, the NATO chamber's slightly larger dimensions will allow pressure to drop compared to the SAAMI Spec .223 Rem chamber. If there was no difference there wouldn't be different chamber dimensions.
Why does it have to say 5.56 on it what is the diff. between it & a .223 ?
See above. Also, here's the link to the chamber dimensions bigedp copied without citing - http://www.ar15barrels.com/data/223vs556.pdf - in the original format it's also readable.
 
The new Mossberg MVP is supposed to be chambered for the 5.56 NATO. It uses a 1 in 9 twist and utilizes any standard AR magazine. I am looking forward to buying one of these in the near future...it may replace my 22-250 for whistle pigs and coyotes.

mossmvp.png
 
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The difference between the .223 & 5.56 NATO chamber is for battle purposes , you know dents & dirt & such . Same with the rounds .
 
The difference between the .223 & 5.56 NATO chamber is for battle purposes , you know dents & dirt & such . Same with the rounds .
You're free to believe what you want to believe. You have a .223 Rem chambered gun that doesn't have a loose chamber? Feel like shooting 5.56 NATO MK 262 ammo in it?
 
Thanks all for your input. I asked a simple question and and had a few replys. Thx again.I DID not whan this to get into a .223 vs 5.56 caliber!! So I'm happy with what I learned . The 5.56/.223 topic is probablly one of the most discussed threads here. Search and you will find. deadeye
 
Ruger M77 Laminated Compact shoots 5.56 really well

Ruger M77 Laminated Compact shoots 5.56 really well
 
This of course is NOT the correct answer

In a full sized bolt action that can handle large case head 65k + psi belted magnums my 5.56 ammo can have pressure spikes all it wants in the guns 223 chamber. Which won't cause such an action the slightest distress with 223's diminutive bolt head/thrust. Remember SAAMI is color blind, to them everything is black or white, under max pressure FOR THE CARTRIDGE or above. The action in questions pressure ratings do not apply

As far as I'm concerned 223 is 5.56 in full sized bolt guns, if my twist will stabilize it and the throat is long enough to chamber it I'm shooting it


Tapatalk post via IPhone.
 
You're free to believe what you want to believe. You have a .223 Rem chambered gun that doesn't have a loose chamber? Feel like shooting 5.56 NATO MK 262 ammo in it?
I hope it don`t , the thin walled .223 would be prone to splitting !
 
This of course is NOT the correct answer

In a full sized bolt action that can handle large case head 65k + psi belted magnums my 5.56 ammo can have pressure spikes all it wants in the guns 223 chamber. Which won't cause such an action the slightest distress with 223's diminutive bolt head/thrust. Remember SAAMI is color blind, to them everything is black or white, under max pressure FOR THE CARTRIDGE or above. The action in questions pressure ratings do not apply

As far as I'm concerned 223 is 5.56 in full sized bolt guns, if my twist will stabilize it and the throat is long enough to chamber it I'm shooting it
That only applies to .223 rifles built on full size actions. It doesn't preclude problematic extraction either. I agree with your reasoning in that circumstance if, IFF, cases extract smoothly.

There are also rifles like the CZ 527 (which may actually have 5.56 chambers, but I'm not sure), amongst others, which are built on micro actions. I don't know what the pressure tolerances for all those rifles are either. Perhaps you can enlighten me. I'm not a bolt rifle expert like some here are.
 
That only applies to .223 rifles built on full size actions. It doesn't preclude problematic extraction either. I agree with your reasoning in that circumstance if, IFF, cases extract smoothly.

There are also rifles like the CZ 527 (which may actually have 5.56 chambers, but I'm not sure), amongst others, which are built on micro actions. I don't know what the pressure tolerances for all those rifles are either. Perhaps you can enlighten me. I'm not a bolt rifle expert like some here are.

You're exactly right and that's why I specified full sized.

On actions like the 527 caution is more prudent. But then again the little cz can be had in 204 ruger.


Tapatalk post via IPhone.
 
Cool, we're on the same page R.W. Dale. Like everything else, there are always variables. As long as the discussion fleshes out all the pertinent info I think it helps everyone.
 
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