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Posted: 4/16/2024 5:29:34 AM EDT
Link Posted: 4/16/2024 5:31:44 AM EDT
[#1]
Already done 12 years ago... one would have thought that most would have already understood this:

https://www.luckygunner.com/labs/5-56-vs-223/
Link Posted: 4/16/2024 5:33:45 AM EDT
[#2]
Many, many moons ago, I fired thousands of rounds of 5.56 through a .223. Long before I "knew" you were not supposed to do that.

So, too each his own.
Link Posted: 4/16/2024 6:13:08 AM EDT
[#3]
Pretty much everyone did until the internet……….
Link Posted: 4/16/2024 6:15:49 AM EDT
[#4]
Link Posted: 4/16/2024 6:18:12 AM EDT
[#5]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
Pretty much everyone did until the internet……….
View Quote

Link Posted: 4/16/2024 6:34:14 AM EDT
[#6]
you can shoot 50 bmg out of a 12ga once. nobody is asking 'is it possible'. everyone is asking for long term consequences. for example, if the throat goes from 2 moa to 6 moa in 5k rounds, i'd definitely go with the correct caliber. and forgotten weapons are subject matter experts = nobodies. things like hoop stress, tensile or impulse are not addressed. as an alternative, garand thumb Does bring in an engineer to measure these specs. while garand thumb isn't educated in nuance, he was at least smart enough to know to bring in someone who did.

small differences add up. the bigger the difference, the faster it adds up. the 50 in 12ga is egregious. i've seen plenty of 9mm casing that were 'ejected' out of a 10mm. i don't know what other stupid shit happens, but more deformation is more wear. just because some guns can sometimes, doesn't mean all guns can do it all the time. speaking of liability, if something does go wrong, would you rather submit a warranty to the manufacturer with the correct ammo or would you submit it to forgotten weapons with the incorrect ammo?

forgotten weapons, as the name implies, are purely there for historical reference.

personally, the amount of provably incorrect shit on their channel has made me question whether the history stuff is accurate too.
Link Posted: 4/16/2024 6:45:42 AM EDT
[#7]
Discussion ForumsJump to Quoted PostQuote History
Quoted:

you can shoot 50 bmg out of a 12ga once. nobody is asking 'is it possible'. everyone is asking for long term consequences. for example, if the throat goes from 2 moa to 6 moa in 5k rounds, i'd definitely go with the correct caliber. and forgotten weapons are subject matter experts = nobodies. things like hoop stress, tensile or impulse are not addressed. as an alternative, garand thumb Does bring in an engineer to measure these specs. while garand thumb isn't educated in nuance, he was at least smart enough to know to bring in someone who did.

small differences add up. the bigger the difference, the faster it adds up. the 50 in 12ga is egregious. i've seen plenty of 9mm casing that were 'ejected' out of a 10mm. i don't know what other stupid shit happens, but more deformation is more wear. just because some guns can sometimes, doesn't mean all guns can do it all the time. speaking of liability, if something does go wrong, would you rather submit a warranty to the manufacturer with the correct ammo or would you submit it to forgotten weapons with the incorrect ammo?

forgotten weapons, as the name implies, are purely there for historical reference.

personally, the amount of provably incorrect shit on their channel has made me question whether the history stuff is accurate too.
View Quote

A rare, perfect take on the issue. You should be ashamed!
Posts like yours are what make arf a good thing. Thank you.
Link Posted: 4/16/2024 6:52:42 AM EDT
[#8]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
Pretty much everyone did until the internet……….
View Quote



this, bunch of scared Sally's nowadays

this world has gotten pathetic
Link Posted: 4/16/2024 6:56:30 AM EDT
[#9]
That query is what first brought me to this place through the Ammo Oracle in 2001

https://www.ar15.com/ammo-oracle/history/difference.html
Link Posted: 4/16/2024 6:59:08 AM EDT
[#10]
Don't worry about it. They are functionally the same.
Link Posted: 4/16/2024 7:15:17 AM EDT
[#11]
Discussion ForumsJump to Quoted PostQuote History
Quoted:

you can shoot 50 bmg out of a 12ga once. nobody is asking 'is it possible'. everyone is asking for long term consequences. for example, if the throat goes from 2 moa to 6 moa in 5k rounds, i'd definitely go with the correct caliber. and forgotten weapons are subject matter experts = nobodies. things like hoop stress, tensile or impulse are not addressed. as an alternative, garand thumb Does bring in an engineer to measure these specs. while garand thumb isn't educated in nuance, he was at least smart enough to know to bring in someone who did.

small differences add up. the bigger the difference, the faster it adds up. the 50 in 12ga is egregious. i've seen plenty of 9mm casing that were 'ejected' out of a 10mm. i don't know what other stupid shit happens, but more deformation is more wear. just because some guns can sometimes, doesn't mean all guns can do it all the time. speaking of liability, if something does go wrong, would you rather submit a warranty to the manufacturer with the correct ammo or would you submit it to forgotten weapons with the incorrect ammo?

forgotten weapons, as the name implies, are purely there for historical reference.

personally, the amount of provably incorrect shit on their channel has made me question whether the history stuff is accurate too.
View Quote



This is a solid take, the takeaway for me being "it's not dangerous, but probably not the best thing to do for accuracy and wear." Which is fine. I wouldn't sweat dumping a few cases of 5.56 down an imagined $80 black Friday Bear Creek .223 barrel if such an animal existed, but would have reservations about running it in an HK SL8 or some such expensive fancy thing.

On Forgotten Weapons though, Ian has done more than 3,000 videos to date, as of the last time I pulled the archive down to have a local version. With that volume of content, I am sure you're right that he's gotten some things wrong. However, he has created the single best general reference collection of firearms information in existence with as much historical context and information as he's able to give. Without politics or drama, and served up for free.
Link Posted: 4/16/2024 7:17:27 AM EDT
[#12]
Wait!

You're not supposed to?

Link Posted: 4/16/2024 7:21:08 AM EDT
[#13]
Discussion ForumsJump to Quoted PostQuote History
Quoted:

you can shoot 50 bmg out of a 12ga once. nobody is asking 'is it possible'. everyone is asking for long term consequences. for example, if the throat goes from 2 moa to 6 moa in 5k rounds, i'd definitely go with the correct caliber. and forgotten weapons are subject matter experts = nobodies. things like hoop stress, tensile or impulse are not addressed. as an alternative, garand thumb Does bring in an engineer to measure these specs. while garand thumb isn't educated in nuance, he was at least smart enough to know to bring in someone who did.

small differences add up. the bigger the difference, the faster it adds up. the 50 in 12ga is egregious. i've seen plenty of 9mm casing that were 'ejected' out of a 10mm. i don't know what other stupid shit happens, but more deformation is more wear. just because some guns can sometimes, doesn't mean all guns can do it all the time. speaking of liability, if something does go wrong, would you rather submit a warranty to the manufacturer with the correct ammo or would you submit it to forgotten weapons with the incorrect ammo?

forgotten weapons, as the name implies, are purely there for historical reference.

personally, the amount of provably incorrect shit on their channel has made me question whether the history stuff is accurate too.
View Quote


Do you feel better now?

“5.56 NATO chamber having a 0.125” longer leade”. Is the only difference.  Most can’t tell me what leade means without looking it up.  5.56 NATO is loaded to higher pressures, sometimes.  All .223 barrels made in the last 50 years will handle NATO pressures.
Link Posted: 4/16/2024 8:29:52 AM EDT
[#14]
I have 26 rifles chambered in 5.56x45mm and 4 chambered in .223.

I have shot a huge mix out of 2 of the .223 rifles, while I generally shoot handloads out of the other 2 (a Varmint AR with a 24-inch 1:10 twist barrel) and a Remington XR100, because they both seem to shoot 50 grain bullets better, and not much of that is available commercially.

I agree with the poster above that no one ever even considered such a thing before the internet and I will add, no one probably died from it either.
Link Posted: 4/16/2024 9:17:45 AM EDT
[#15]
I have always disregarded the 5.56 in a .223 doom harangues. Never blew anything up. Only had 2 rifles with a true .223 chambers though.

I did blow a no-name bolt carrier back into the buffer tube when it sheared the clearly substandard gas key bolts, shooting hot surplus Radway Green ammo. My Colt carbine shot the same ammo and did fine. Small parts QC matters. That ammo was pretty hot though, made for the L85 apparently.

Link Posted: 4/16/2024 9:24:30 AM EDT
[#16]
SAAMI and gun manufacturers will go through great lengths to change a new cartridge so it can't chamber and fire in a similar chamber that would cause an issue.

For some reason they didn't do this with .223/5.56  I wonder why???
Link Posted: 4/16/2024 9:27:08 AM EDT
[#17]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
SAAMI and gun manufacturers will go through great lengths to change a new cartridge so it can't chamber and fire in a similar chamber that would cause an issue.

For some reason they didn't do this with .223/5.56  I wonder why???
View Quote
same as the 762/308 mumbo jumbo
Link Posted: 4/16/2024 9:29:08 AM EDT
[#18]
What if I load .223 brass in 5.56 dies? Am I going to die??
Link Posted: 4/16/2024 9:31:06 AM EDT
[#19]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
What if I load .223 brass in 5.56 dies? Am I going to die??
View Quote


RIP NOMAAM

He was an idiot, but he was OUR idiot.
Link Posted: 4/16/2024 9:36:04 AM EDT
[#20]
We did this recently.  The pressures are measured differently, so the numbers are not as far apart as they appear on paper.  Not material in terms of safety.
Link Posted: 4/16/2024 9:38:05 AM EDT
[#21]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
SAAMI and gun manufacturers will go through great lengths to change a new cartridge so it can't chamber and fire in a similar chamber that would cause an issue.

For some reason they didn't do this with .223/5.56  I wonder why???
View Quote


.300 Eldest Son says your 1st statement is incorrect.
Link Posted: 4/16/2024 9:46:42 AM EDT
[#22]
Link Posted: 4/16/2024 9:49:24 AM EDT
[#23]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
SAAMI and gun manufacturers will go through great lengths to change a new cartridge so it can't chamber and fire in a similar chamber that would cause an issue.

For some reason they didn't do this with .223/5.56  I wonder why???
View Quote


Because 5.56x45 was a Mil-Std, not SAAMI approved. It's only been approved relatively recently. Same for 7.62x51.
Link Posted: 4/16/2024 10:03:14 AM EDT
[#24]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
What if I load .223 brass in 5.56 dies? Am I going to die??
View Quote


Dimensions of the case are the same, chamber leade is the difference, iirc.

Disregard if joking.

Link Posted: 4/16/2024 11:14:19 AM EDT
[#25]
My Colt 6721 receiver says .223, it's oem 1:9 barrel says 5.56, it's not a question that concerns me.
Link Posted: 4/16/2024 11:23:30 AM EDT
[#26]
Link Posted: 4/16/2024 11:25:01 AM EDT
[#27]
Link Posted: 4/16/2024 11:26:38 AM EDT
[#28]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
What if I load .223 brass in 5.56 dies? Am I going to die??
View Quote



Someday, yes.  But not due to this.
Link Posted: 4/16/2024 11:46:47 AM EDT
[#29]
Has anyone actually had or personally seen a gun blow up from shooting 556 in a 223? It has to happen all the time for the myth to be true right?
Link Posted: 4/16/2024 11:56:47 AM EDT
[#30]
I have seen many primers blown out of the back of a shell of a 556 in 223 barrel. The only reason I know is the priners wedged under the trigger and the ar wouldn't fire
Link Posted: 4/16/2024 11:58:13 AM EDT
[#31]
Discussion ForumsJump to Quoted PostQuote History
Quoted:

you can shoot 50 bmg out of a 12ga once. nobody is asking 'is it possible'. everyone is asking for long term consequences. for example, if the throat goes from 2 moa to 6 moa in 5k rounds, i'd definitely go with the correct caliber. and forgotten weapons are subject matter experts = nobodies. things like hoop stress, tensile or impulse are not addressed. as an alternative, garand thumb Does bring in an engineer to measure these specs. while garand thumb isn't educated in nuance, he was at least smart enough to know to bring in someone who did.

small differences add up. the bigger the difference, the faster it adds up. the 50 in 12ga is egregious. i've seen plenty of 9mm casing that were 'ejected' out of a 10mm. i don't know what other stupid shit happens, but more deformation is more wear. just because some guns can sometimes, doesn't mean all guns can do it all the time. speaking of liability, if something does go wrong, would you rather submit a warranty to the manufacturer with the correct ammo or would you submit it to forgotten weapons with the incorrect ammo?

forgotten weapons, as the name implies, are purely there for historical reference.

personally, the amount of provably incorrect shit on their channel has made me question whether the history stuff is accurate too.
View Quote


Bravo sir.
Link Posted: 4/16/2024 12:00:34 PM EDT
[#32]
There used to be epic purse swinging over that question. Was always very entertaining.
Link Posted: 4/16/2024 12:02:47 PM EDT
[#33]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
I have seen many primers blown out of the back of a shell of a 556 in 223 barrel. The only reason I know is the priners wedged under the trigger and the ar wouldn't fire
View Quote
Reloads?
Link Posted: 4/16/2024 12:03:01 PM EDT
[#34]
Discussion ForumsJump to Quoted PostQuote History
Quoted:



this, bunch of scared Sally's nowadays

this world has gotten pathetic
View Quote View All Quotes
View All Quotes
Discussion ForumsJump to Quoted PostQuote History
Quoted:
Quoted:
Pretty much everyone did until the internet……….



this, bunch of scared Sally's nowadays

this world has gotten pathetic

Will shooting 5.56 out of a .223 make me a goddamn sexual tyrannosaurus?
Link Posted: 4/16/2024 12:03:35 PM EDT
[#35]
They say you can shoot commercial .30-06 out of a Garand now too.

But the people saying that haven't stepped up with a guarantee to fix my rifle if they're wrong.
Link Posted: 4/16/2024 12:06:05 PM EDT
[#36]
Discussion ForumsJump to Quoted PostQuote History
Quoted:


.300 Eldest Son says your 1st statement is incorrect.
View Quote View All Quotes
View All Quotes
Discussion ForumsJump to Quoted PostQuote History
Quoted:
Quoted:
SAAMI and gun manufacturers will go through great lengths to change a new cartridge so it can't chamber and fire in a similar chamber that would cause an issue.

For some reason they didn't do this with .223/5.56  I wonder why???


.300 Eldest Son says your 1st statement is incorrect.

Attachment Attached File
Link Posted: 4/16/2024 12:06:41 PM EDT
[#37]
Discussion ForumsJump to Quoted PostQuote History
Quoted:

you can shoot 50 bmg out of a 12ga once. nobody is asking 'is it possible'. everyone is asking for long term consequences. for example, if the throat goes from 2 moa to 6 moa in 5k rounds, i'd definitely go with the correct caliber. and forgotten weapons are subject matter experts = nobodies. things like hoop stress, tensile or impulse are not addressed. as an alternative, garand thumb Does bring in an engineer to measure these specs. while garand thumb isn't educated in nuance, he was at least smart enough to know to bring in someone who did.

small differences add up. the bigger the difference, the faster it adds up. the 50 in 12ga is egregious. i've seen plenty of 9mm casing that were 'ejected' out of a 10mm. i don't know what other stupid shit happens, but more deformation is more wear. just because some guns can sometimes, doesn't mean all guns can do it all the time. speaking of liability, if something does go wrong, would you rather submit a warranty to the manufacturer with the correct ammo or would you submit it to forgotten weapons with the incorrect ammo?

forgotten weapons, as the name implies, are purely there for historical reference.

personally, the amount of provably incorrect shit on their channel has made me question whether the history stuff is accurate too.
View Quote

Is there any data that shows a degradation in group size or change in velocity?
Link Posted: 4/16/2024 12:09:58 PM EDT
[#38]
To further screw things up, early Mini 14’s had the barrels marked .223, but we’re actually 5.56 NATO barrels. Fact, check me. It’s true.

Link Posted: 4/16/2024 12:13:14 PM EDT
[#39]
I'll stick to the correct round for the weapon system. I don't care what some youtube dork says.
Link Posted: 4/16/2024 12:15:28 PM EDT
[#40]
No, it's like dividing by zero.   You can damage the space time continuum.
Link Posted: 4/16/2024 12:18:22 PM EDT
[#41]
How many people have bought used .223 rifles?  You know nothing about what kind of ammo was fired through them.
Link Posted: 4/16/2024 12:18:51 PM EDT
[#42]
The interweb told me it’s the other way around for 762 vs 308

I’ve only shot 308 in my surplus StG58 and I’m still alive

Link Posted: 4/16/2024 12:19:58 PM EDT
[#43]
My ARs don't care.

My TC contender carbine doesn't like it.
Link Posted: 4/16/2024 12:20:41 PM EDT
[#44]
I did not even realize this was still a question.
Amazing.
Link Posted: 4/16/2024 12:23:34 PM EDT
[#45]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
same as the 762/308 mumbo jumbo
View Quote


Yep, its all a bunch of nothing.  Shoot it and be happy.
Link Posted: 4/16/2024 12:24:06 PM EDT
[#46]
Quoted:
https://www.youtube.com/watch?v=-fmcdaAOkY4

He explains the differences between 223 v 556 and basically says "Everyone is too afraid to say it in litigation wary America, but there's really little difference and we'd see blown up rifles all the time if it mattered"

I didn't say that, he did, don't sue me. Nearly every other video from places like Brownells and reloaders who explain the difference in greater detail say not to.
View Quote


Oh. FFS, not this crapola again....
Fine. Don't want to shoot 5.56? Excellent. More for me. Don't want to shoot 223? Excellent. More for me.
Please. Stop beating this poor horse. He's had enough I think.
Link Posted: 4/16/2024 12:31:25 PM EDT
[#47]
Mini 14's have been marked both .223 and 5.56 on their barrels and I doubt there was much difference except the stamp.
Link Posted: 4/16/2024 12:33:38 PM EDT
[#48]
It’s all in the throat length. I have 3 bolt guns in 223 that I’ve shot 5.56x45 through. My Ruger Hawkeye has a very stiff bolt lift from SS109. My savages do not. Short throat in the Ruger compared to the Savages I have and most other rifle makers are fine to put 5.56 through.

Most of my ARs are chambered in 223 Wylde. Hybrid throat that’s not Linda Lovelace like 5.56 is. No issues there at all.

Link Posted: 4/16/2024 1:22:31 PM EDT
[#49]
There's no real difference, same as .308 vs. 7.62.
Link Posted: 4/16/2024 1:27:42 PM EDT
[#50]
Discussion ForumsJump to Quoted PostQuote History
Quoted:

View Quote View All Quotes
View All Quotes
Discussion ForumsJump to Quoted PostQuote History
Quoted:
Quoted:
Pretty much everyone did until the internet……….


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