| .223 Remington |
The 5.56 x 45 mm NATO cartridge is identical in appearance to the .223 Remington cartridge. They are however not completely interchangeable. | | Type | Rifle/varmint | | Place of origin | USA | | Production history | | Designer | Remington Arms | | Designed | 1964 | | Specifications | | Case type | Rimless, bottleneck | | Bullet diameter | .224 in (5.69 mm) | | Neck diameter | .253 in (6.43 mm) | | Shoulder diameter | .354 in (8.99 mm) | | Base diameter | .376 in (9.55 mm) | | Rim diameter | .378 in (9.6 mm) | | Rim thickness | .045 in (1.14 mm) | | Case length | 1.76 in (44.7 mm) | | Overall length | 2.26 in (57.4 mm) | | Rifling twist | 1/12" (typical) | | Primer type | Small rifle | | Ballistic performance | | Bullet weight/type | Velocity | Energy | | 40 gr Nosler ballistic tip | 3700 ft/s
(~1128 m/s) | 1260 ft·lbf
(~1714 J) | | 55 gr Nosler ballistic tip | 3240 ft/s
(~988 m/s) | 1282 ft·lbf
(~1744 J) | | 60 gr Nosler partition | 3160 ft/s
(~963 m/s) | 1330 ft·lbf
(~1809 J) | | 69 gr BTHP | 2950 ft/s
(~899 m/s) | 1333 ft·lbf
(~1813 J) | | 77 gr BTHP | 2750 ft/s
(~838 m/s) | 1293 ft·lbf
(~1758 J) | Test barrel length: 24 in.
Source: Federal Cartridge Co. ballistics page | The .223 Remington is a sporting cartridge with the same external dimensions as the 5.56 x 45 mm NATO military cartridge. It is loaded with a .224" diameter, jacketed bullet, with weights ranging from 40 up to 90 grains, though the most common loadings by far are 55 grains. Image File history File linksMetadata No higher resolution available. ...
U.S. Military 5. ...
Remington Arms is a major American manufacturer of rifles, shotguns, other firearms, revolvers and ammunition. ...
.357 Magnum cartridges, containing bullets A bullet is a solid projectile propelled by a firearm and is normally made from metal (usually lead). ...
Rifling of a Canon de 75 modèle 1897 A 35 caliber Remington, with a microgrove rifled barrel with a right hand twist. ...
The percussion cap or primer was the crucial invention that enabled firearms to fire in any weather. ...
A grain is a unit of mass equal to 0. ...
Feet per second is a unit of speed; it expressses the number of feet traveled in one second. ...
Metre per second (U.S. spelling: meter per second) is an SI derived unit of both speed (scalar) and velocity (vector), defined by distance in metres divided by time in seconds. ...
The foot-pound force (symbol: ft·lbf) is an English unit of work or energy. ...
The joule (IPA pronunciation: or ) (symbol: J) is the SI unit of energy. ...
A grain is a unit of mass equal to 0. ...
Feet per second is a unit of speed; it expressses the number of feet traveled in one second. ...
Metre per second (U.S. spelling: meter per second) is an SI derived unit of both speed (scalar) and velocity (vector), defined by distance in metres divided by time in seconds. ...
The foot-pound force (symbol: ft·lbf) is an English unit of work or energy. ...
The joule (IPA pronunciation: or ) (symbol: J) is the SI unit of energy. ...
A grain is a unit of mass equal to 0. ...
Feet per second is a unit of speed; it expressses the number of feet traveled in one second. ...
Metre per second (U.S. spelling: meter per second) is an SI derived unit of both speed (scalar) and velocity (vector), defined by distance in metres divided by time in seconds. ...
The foot-pound force (symbol: ft·lbf) is an English unit of work or energy. ...
The joule (IPA pronunciation: or ) (symbol: J) is the SI unit of energy. ...
A grain is a unit of mass equal to 0. ...
Feet per second is a unit of speed; it expressses the number of feet traveled in one second. ...
Metre per second (U.S. spelling: meter per second) is an SI derived unit of both speed (scalar) and velocity (vector), defined by distance in metres divided by time in seconds. ...
The foot-pound force (symbol: ft·lbf) is an English unit of work or energy. ...
The joule (IPA pronunciation: or ) (symbol: J) is the SI unit of energy. ...
A grain is a unit of mass equal to 0. ...
Feet per second is a unit of speed; it expressses the number of feet traveled in one second. ...
Metre per second (U.S. spelling: meter per second) is an SI derived unit of both speed (scalar) and velocity (vector), defined by distance in metres divided by time in seconds. ...
The foot-pound force (symbol: ft·lbf) is an English unit of work or energy. ...
The joule (IPA pronunciation: or ) (symbol: J) is the SI unit of energy. ...
This article does not cite its references or sources. ...
U.S. Military 5. ...
The primary difference between .223 Remington and 5.56 x 45 mm is that .223 is loaded to lower pressures and velocities compared to 5.56 mm. .223 Remington ammunition can be safely fired in a 5.56 mm chambered gun, but the reverse can be an unsafe combination. The additional pressure created by 5.56 mm ammo will frequently cause over-pressure problems such as difficult extraction, flowing brass, or popped primers, but in extreme cases, could damage or destroy the rifle. Chambers cut to .223 Remington specifications have a shorter leade (throat) area as well as slightly shorter headspace dimensions compared to 5.56 mm "military" chamber specs, which contributes to the pressure issues.
History
The .223 Remington was developed as an enlarged and higher velocity version of the .222 Remington, which had existed in the 1950's as a varmint cartridge. The .223 Remington was developed specifically for the Armalite AR-15, a version of which later became the U.S. military's M-16 rifle. The . ...
1950 (MCML) was a common year starting on Sunday (link will take you to calendar). ...
This article or section should include material from Colt AR-15 SP1 ar-15. ...
M16 (more formally United States Rifle, Caliber 5. ...
Uses The .223 Remington is one of the most common rifle cartridges in use in the United States, being widely used in two types of rifles: (1) varmint rifles, most of which are bolt action and commonly have 1-in-12 rifling twist suitable for bullets between 40 and 60 grains, and (2) semiautomatic rifles such as the AR-15 and the Ruger Mini-14, which commonly have twist rates of 1-in-9 suitable for bullets from 50 to 75 grains. The latter category are often used by law enforcement, for home defense, and for varmint hunting (especially farm and ranch work, after which Ruger named a version of its Mini-14 the "Ranch Rifle"). .223 Remington ammunition is among the least expensive centerfire calibers and is often used by avid target shooters, particularly in the "high power rifle" category. Varmint rifle is an American English term for a relatively small-caliber firearm (or even a high-powered air gun) primarily used for hunting varmints—such as coyotes and smaller. ...
A bolt-action firearm is one that is manually operated (i. ...
Rifling of a Canon de 75 modèle 1897 A 35 caliber Remington, with a microgrove rifled barrel with a right hand twist. ...
.357 Magnum cartridges, containing bullets A bullet is a solid projectile propelled by a firearm and is normally made from metal (usually lead). ...
The AR-15 is a lightweight, air-cooled, magazine-fed, autoloading, centerfire rifle. ...
Mini-14 Ranch Rifle (note folding leaf rear sight) with flush 5 round magazine The Mini-14 is a small, lightweight semi-automatic rifle manufactured by Sturm, Ruger. ...
The Mini-14 is a small, lightweight semi-automatic rifle manufactured by Sturm, Ruger. ...
A centerfire cartridge is a cartridge in which the primer is located in the center of the cartridge case head. ...
.223 Remington versus 5.56 mm NATO While the 5.56 mm and .223 cartridges are very similar, they are not identical. Military cases are made from thicker brass than commercial cases, which reduces the powder capacity (an important consideration for handloaders), and the NATO specification allows a higher chamber pressure. The 5.56 mm chambering, known as a NATO or mil-spec chambers, have a longer leade, which is the distance between the mouth of the cartridge and the point at which the rifling engages the bullet. The .223 chambering, known as SAAMI chamber, is allowed to have a shorter leade, and is only required to be proof tested to the lower SAAMI chamber pressure. To address these issues, various proprietary chambers exist, such as the Wylde chamber (Rock River Arms)[1] or the Armalite chamber, which are designed to handle cows are kool both 5.56 mm and .223 equally well. Handloading is the process used to create firearm cartridges by hand versus those put together en masse and sold commercially, generally in packages of 6 to 50. ...
Saami or SAAMI can stand for: Sami peoples Sporting Arms and Ammunition Manufacturers Institute This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. ...
A proof test is a test wherein a deliberately overpressure round is fired from a firearm in order to verify that the firearm is not defective and will not explode on firing. ...
ArmaLite, originally the ArmaLite Division of the Fairchild Engine and Airplane Corporation, is one of the most influential corporations in the history of 20th century small arms. ...
Using commercial .223 cartridges in a 5.56-chambered rifle should work reliably, but generally will not be as accurate as when fired from a .223-chambered gun due to the excessive leade[2]. Using 5.56 mil-spec cartridges (such as the M855) in a .223-chambered rifle can lead to excessive wear and stress on the rifle and even be unsafe, and the SAAMI recommends against the practice[3]. Some commercial rifles marked as ".223 Remington" are in fact suited for 5.56 mm, such as many commercial AR-15 variants and the Ruger Mini-14, but the manufacturer should always be consulted to verify that this is acceptable before attempting it, and signs of excessive pressure (such as flattening or gas staining of the primers) should be looked for in the initial te.........patatoe!!!!!sting with 5.56 mm ammunition[4]. Mini-14 Ranch Rifle (note folding leaf rear sight) with flush 5 round magazine The Mini-14 is a small, lightweight semi-automatic rifle manufactured by Sturm, Ruger. ...
See also M16 (more formally United States Rifle, Caliber 5. ...
This article or section should include material from Colt AR-15 SP1 ar-15. ...
Mini-14 Ranch Rifle (note folding leaf rear sight) with flush 5 round magazine The Mini-14 is a small, lightweight semi-automatic rifle manufactured by Sturm, Ruger. ...
U.S. Military 5. ...
External links - AR15 Ammo Oracle by Troy Tiscareno
- A 5.56 X 45mm "Timeline" by Daniel Watters
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