hometownhero
CGN Ultra frequent flyer
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- Toon Town, Sk
Guess we will have to agree to disagree. The links I posted as well as thousands more all say its thicker.
Confused about .223 vs 5.66 Nato
- Thread starter BeagleBoy360
- Start date
Guess we will have to agree to disagree. The links I posted as well as thousands more all say its thicker.
CIP specs use .223 Remington and .308 Winchester to designate the civilian cartridges, not 5.56X45 and 7.62.X51. The metric designation of these cartridges is for military only. They do so for most US (SAAMI) cartridges, too.
But CIP specifies 4300 bars (62 366 PSI MAP) for the .223 Rem.
hometownhero
CGN Ultra frequent flyer
- Location
- Toon Town, Sk
I dont have a 5.56 chambered gun so why would I have the brass. Also according to federal they may be thicker. But what would federal know not like they load or sell alot of ammo. Whatever the gun is stamped on the side thats what gets shot it it. That is what we are all taught in the class when we go to get our pal.
My understanding was that the CUP (copper units of pressure) and PSI do not directly correlate. And to further complicate matters, .223 is rated by CUP and 5.56 is rated by PSI.
There lies the confusion.
Google us up some pictures of .223 chambered rifles that have blown up because the user shot 5.56 NATO ammo out of it. There must be millions of 5.56 round shot out of .223 rifles over the years so the there should be hundreds of pictures
Several people, me included, have asked for photos of blowed-up guns due to 5.56 ammo in .223 chambers. Still waiting...
I just bought 3200 rounds of Norinco 5.56 for my Ruger Mini 14 in .223.
Maybe I'll get to post my own pics
SAAMI now (finally) switched to Piezo transducers to read pressures as a standard, like NATO and CIP do since so long. SAMMI's 55 000 PSI is actually a Piezo reading.
What really seems to matter is the shape / construction of some military bullets, which do not conform with the use of a very short leade (as per SAAMI MINIMUM spec). But a lot of SAAMI rilfes have, in fact, long leade.
I remember that someone (Ned Christiansen, of Michiguns, I think) tested XM193 ammo in a test barrel (transducer) revealing average pressures close to 73 000 PSI and peak pressures of over 75 000 PSI, which is above SAAMI proof loads for the .223 Rem and close to the Magnum proof loads (more or less 80 000 PSI), approching CIP's proof load (78 000 PSI or 5375 bars).
The 5.56 NATO barrels when compared to the .223, also beneficiate of a sharper angled engagement cone, the same type as used by so many European arms manufacturers, which also tends to lower the initial pressure by progressively engraving the bullet.
Anyways, in an other hand, as stated above, millions of 5.56 ammo is shot every year in civilian firearms with not visible effect.
What really seems to matter is the shape / construction of some military bullets, which do not conform with the use of a very short leade (as per SAAMI MINIMUM spec). But a lot of SAAMI rilfes have, in fact, long leade.
I remember that someone (Ned Christiansen, of Michiguns, I think) tested XM193 ammo in a test barrel (transducer) revealing average pressures close to 73 000 PSI and peak pressures of over 75 000 PSI, which is above SAAMI proof loads for the .223 Rem and close to the Magnum proof loads (more or less 80 000 PSI), approching CIP's proof load (78 000 PSI or 5375 bars).
The 5.56 NATO barrels when compared to the .223, also beneficiate of a sharper angled engagement cone, the same type as used by so many European arms manufacturers, which also tends to lower the initial pressure by progressively engraving the bullet.
Anyways, in an other hand, as stated above, millions of 5.56 ammo is shot every year in civilian firearms with not visible effect.
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I see, you don't even use .223/5.56 but you're ok with perpetuating Internet myth about it. Got it.
Well, Federal may be correct, and your brass may have slight variation in size (thicknesses) and even brass alloy composition from brand to brand/lot to lot - the critical part is determining if this makes a significant difference.
hometownhero
CGN Ultra frequent flyer
- Location
- Toon Town, Sk
I for one do not use ammo in guns not marked for it so why would I use 5.56. I for one do not want to find out so I will believe the pros about it. I like my face how it is and my guns in one piece.
How's that google search going for pictures of .223 rifles blown up by shooting 5.56 ammo? Since both have been available to the market for 50 years, there must be thousands of pictures of blown up rifles. I can't seem to find any, but maybe your google fu is better than the rest of us.
Several people, me included, have asked for photos of blowed-up guns due to 5.56 ammo in .223 chambers. Still waiting...
I just bought 3200 rounds of Norinco 5.56 for my Ruger Mini 14 in .223.
Maybe I'll get to post my own pics
Just FYI (but I think you know already
) page 12 of my mini 14 manual says you can use either .223 or 5.56 EXCEPT only .223 in the target models...I don't know what's different about the target model????
