| .30 RAR | ||
|---|---|---|
| Type | Rifle, Centerfire | |
| Place of origin | United States | |
| Production history | ||
| Designed | 2008 | |
| Manufacturer | Remington | |
| Produced | 2008-present | |
| Specifications | ||
| Parent case | .450 Bushmaster | |
| Case type | Rimless, bottleneck | |
| Base diameter | .500 in (12.7 mm) | |
| Rim diameter | .473 in (12.0 mm) | |
| Rim thickness | .054 in (1.4 mm) | |
| Case length | 1.53 in (39 mm) | |
| Overall length | 2.26 in (57 mm) | |
| Case capacity | 44 gr H2O (2.86 cm³) | |
| Rifling twist | 1:10 | |
| Primer type | Large rifle | |
| Maximum pressure | 55,000 psi (380 MPa) | |
| Ballistic performance | ||
| Bullet weight/type | Velocity | Energy |
| 125 gr (8.1 g) Corelokt | 2,800 ft/s (850 m/s) | 2,176 ft·lbf (2,950 J) |
| 125 gr (8.1 g) AccuTip BT | 2,800 ft/s (850 m/s) | 2,176 ft·lbf (2,950 J) |
| Test barrel length: 24 Source(s): http://accurateshooter.wordpress.com/2008/10/15/remington-introduces-new-30-remington-ar-cartridge/ |
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The .30 RAR rifle cartridge was developed to fill a perceived gap in performance on game between the .223 Remington and larger cartridges such as the .308 Winchester and the 6.8 SPC.[1] Design of the cartridge is considered a joint effort between companies under the "Freedom Group" name through a private equity firm [1] and included such companies as Bushmaster, DPMS and Remington itself.
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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 [2]. 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 where a larger calibre projectile is required.
A side effect of the short, wide case has meant that the Remington R-15 Rifle which was designed alongside the cartridge uses a four round, single stack magazine [1].