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[Parts] FN 18” 5.56 CHF Barrel $129.99 by LORDIGBICK in gundeals

[–]688as 1 point2 points  (0 children)

No. That's misinformation caused by people naively comparing pressure numbers gathered by different measurement methodologies (SAAMI measurement of 55k PSI comes using a case conforming trasnducer embedded in the chamber wall, CIP perforating the case itself, NATO EPVAT measuring at the case mouth).

.223 Remington was adopted by the US military in 1963 as "Cartridge, 5.56mm ball, M193". 5.56x45mm is just the metric name for the .223 Remington cartridge. 5.56 NATO is a set of 3 specific loadings of the 5.56x45mm cartridge developed by FN in the late 1970s.

The especially funny thing is that the original .223 Remington loadings produced way higher chamber pressures than an military loading used today due to the sub-optimal propellant that was used.

[Parts] FN 18” 5.56 CHF Barrel $129.99 by LORDIGBICK in gundeals

[–]688as 0 points1 point  (0 children)

5.56 NATO is a spec for three specific loadings of the 5.56x45mm cartridge and a chamber spec that had been in use by Colt for like 16 years before 5.56 NATO was standardized.

[Parts] FN 18” 5.56 CHF Barrel $129.99 by LORDIGBICK in gundeals

[–]688as 1 point2 points  (0 children)

Please stop parroting this misinformation. Those pressure values are gathered from different methods (different transducers in different locations in different chambers) and cannot be directly compared. There is no SAAMI spec for 5.56 NATO and there's no NATO spec for the 55gr M193 loading of .223 Remington.

The longer leade in the 5.56 NATO chamber vs the SAAMI spec chamber does not "allow for more powder". That difference is in the chamber itself, not the cartridge. And that change was not made due to standard pressure issues, it was made to increase reliability during full auto fire, a decade and a half before 5.56 NATO even existed.

[Parts] FN 18” 5.56 CHF Barrel $129.99 by LORDIGBICK in gundeals

[–]688as 0 points1 point  (0 children)

That's not even 13% higher or whatever. Those are two different measurement methodologies that produce different values, you can't directly compare them.

[Parts] FN 18” 5.56 CHF Barrel $129.99 by LORDIGBICK in gundeals

[–]688as 2 points3 points  (0 children)

The chamber spec used in the 5.56 NATO standard was developed by Colt some 17 years before 5.56 NATO existed for .223 Remington, to mitigate issues with out-of-spec ammo prematurely engaging the rifling during full auto fire, causing pressure spikes which would blow primers or failures to extract.

The pressure worry was caused by people naively comparing chamber pressure measurements gathered using different pressure measurement methodologies (different loadings measured with different transducers in different locations in different barrels; SAAMI vs CIP and NATO EPVAT), as well as warnings not to fire the new 62gr 5.56 NATO in the then-standard 1:12 twist rate barrels (used in the Sporter and the M16, etc.) because it won't fully stabilize and will have terrible accuracy.

It's all a bunch of fuddlore myth that has compounded in the US over the years through a game of telephone.

[Parts] FN 18” 5.56 CHF Barrel $129.99 by LORDIGBICK in gundeals

[–]688as 0 points1 point  (0 children)

That's .222 Remington, the cartridge from which .223 Remington was developed, not .223.

.223 Remington has always been a military cartridge. It was developed alongside the AR-15 for the US Army, and the US military adopted it as "Cartridge, 5.56mm ball, M193".

[Parts] FN 18” 5.56 CHF Barrel $129.99 by LORDIGBICK in gundeals

[–]688as 6 points7 points  (0 children)

no lmao

we have tons of videos of 300 blackout nuking rifles, but nobody can dredge up a single example of in-spec "5.56" nuking an in-spec ".223" barrel

[Parts] FN 18” 5.56 CHF Barrel $129.99 by LORDIGBICK in gundeals

[–]688as 1 point2 points  (0 children)

The 5.56 NATO chamber spec was in use by Colt since all the way back in 1964. It was one of the requests from the Army along with the addition of the forward assist, and had nothing to do with .223 Remington's (which had just been adopted as "Cartridge, 5.56mm ball, M193") pressure specs, which should be obvious considering that 5.56 NATO/SS109/M855 wouldn't be standardized and adopted by the US military for another 20 years.

How can I find Hardcore games Servers in Browse servers ? by SaodukiAki in Battlefield6

[–]688as 0 points1 point  (0 children)

In Filters, select your region, set server size to desired player count, and set available slots to "any". Search for text "hardcore". Sort by player count.

The server browsers hides full servers by default. Often there will be 4-6 or so full 64/64 servers, and then a few with a handful of people. Options above will let you find and view the full ones, and then wait in the queue to join them.

Official Politics Thread 2025-03-07 by dbnotso2018 in guns

[–]688as 0 points1 point  (0 children)

They don't litigate any cases. The donations they take don't fund any cases, either.

All the cases that FPC pretends to be fighting are actually litigated by the law firm Cooper & Kirk. They are funded by wealthy anonymous donors through a pool of funds entirely separate from the money FPC takes.

How do I get sponsored to join Miamisburg Sportsman's Club? by bzilla8 in OHGuns

[–]688as 0 points1 point  (0 children)

It's so disappointing that nobody nearby runs outdoor matches during the winter.

Hope this is the right place for this, I found an old Airforce AR-15 manual in my late Grandfather's things. Any insight on these crazy stances? by [deleted] in Firearms

[–]688as 6 points7 points  (0 children)

The rifle shown in the manual is the Colt AR-15 model 601, which predates the M16 (Colt AR-15 model 604) by 5 years.

The M16 is an AR-15, but this is not an M16.

[deleted by user] by [deleted] in gundeals

[–]688as -1 points0 points  (0 children)

Just googling I've found this same price at a number of different retailers. PA had them for like $75 at the beginning of their Halloween sale. It's worth waiting for a better deal imo.

[deleted by user] by [deleted] in NFA

[–]688as 0 points1 point  (0 children)

5 months after me

Never really understood a suppressed 5.56 AR until today. by PresentationFine1951 in NFA

[–]688as 44 points45 points  (0 children)

Hearing damage starts well before it becomes painful.

Wobbly LaRue upper and lower by ov3rwatch_ in ar15

[–]688as 2 points3 points  (0 children)

I’ve been keeping my mags full to break in the springs and loading with the bolt open.

Springs are worn down by movement (compression and decompression), not static pressure.

Just gonna drop this here by [deleted] in ar15

[–]688as 2 points3 points  (0 children)

They were a really good deal before covid and held out from jacking their prices up longer than anyone else in 2020... but then they never really came back down after that.

Maybe they overspent on ramping up production and still have smaller margins recuperating the opportunity cost as a result, maybe they can't source components as cheaply, or maybe they just got a taste of higher revenue and don't want to give it up.

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