The .30 Remington AR / 7x39mm Remington AR is an

intermediate cartridge An intermediate cartridge is a rifle/ carbine cartridge that has significantly greater power than a pistol cartridge but still has a reduced muzzle energy compared to fully powered cartridges (such as the .303 British, 7.62×54mmR, 7.65×53 ...

created in 2008 by

Remington Arms Remington Arms Company, LLC, was an American firearms manufacturer, manufacturer of firearms and ammunition. It was formerly owned by the Remington Outdoor Company, which went bankrupt in 2020 with its lines of business sold to several purchase ...

to fill a perceived gap in performance on large game between the

.223 Remington The .223 Remington designated 223 Remington by SAAMI and 223 Rem. by the C.I.P., (pronounced "two-two-three") is a rimless, bottlenecked, centerfire intermediate cartridge. It was developed in 1957 by Remington Arms and Fairchild Industries ...

and larger cartridges such as the .308 Winchester.Nischalke, Mike "The R-15 And The .30 RAR", Shooting Times
Online Article
accessed 13 January 2010 The design of the cartridge is considered a joint effort between companies under the "Freedom Group" name through a

private equity firm A private equity firm or private equity company (often described as a financial sponsor) is an investment management company that provides financial backing and makes investments in the private equity of a Startup company, startup or of an existin ...

and included such companies as Bushmaster, DPMS and Remington itself. It is a rebated rim cartridge designed to fit Remington's R-15 semiautomatic hunting rifle. It was made to fit the dimensional constraints of the AR-15 magazine and is based on a modification of the .450 Bushmaster, which in turn is based on the .284 Winchester. Remington was the only company that manufactured this ammunition and its components. The cartridge was a commercial failure and has been discontinued by Remington.

Design

Starting with a .450 Bushmaster case, Remington trimmed the length to 1.525 in from the original 1.7 and necked it down to accept a conical .308 in diameter bullet with a 25-degree shoulder. The rim size is .492 in and because the round generates 55,000 psi, Remington opted to use a .308 rifle bolt in a 5.56-sized rifle for increased case support. The rim was widened from the .473 in of the parent case to prevent the use of a weaker .450 Bushmaster bolt with this cartridge. With a 150 grain bullet, the round travels at 2,575 feet per second (fps).

Performance

Performance tests between the .30 RAR and the .308 Winchester show that while the .30 RAR does have a good muzzle velocity, the energy it is capable of delivering on target at around 400 yards decreases significantly. Combined with the poorer ballistic coefficients of the lighter projectiles (.267 for the 125-grain Core-Lokt), this makes the .30 RAR a cartridge suited to ranges around 300 to 400 yards, although this can be extended with projectiles of higher ballistic coefficient (.341 for the Speer TNT 125 grain). A side effect of the short, wide case is that the Remington R-15 rifle, which was designed alongside the cartridge, uses a four-round, single-stack magazine.

References

External links

Review of the Remington R-15 VTR

Remington Official Site
{{DEFAULTSORT:30 Remington AR Pistol and rifle cartridges Remington Arms cartridges

Design

Performance

See also

References

External links