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| .300 Remington American Magnum(7.62 x 65.5mm) | ||
|---|---|---|
| Type | Rifle | |
| Place of origin | USA | |
| Production history | ||
| Designer | Aleksandr Kolesnikov | |
| Designed | Feb 2010 | |
| Manufacturer | Remington-derived Wildcat | |
| Variants | 3 | |
| Specifications | ||
| Parent case | .404 Jeffery | |
| Case type | Rimless, bottleneck | |
| Bullet diameter | .308 in (Script error: No such module "Math". mm) | |
| Neck diameter | .344 in (Script error: No such module "Math". mm) | |
| Shoulder diameter | .525 in (Script error: No such module "Math". mm) | |
| Base diameter | .550 in (Script error: No such module "Math". mm) | |
| Rim diameter | .535 in (Script error: No such module "Math". mm) | |
| Rim thickness | .050 in (Script error: No such module "Math". mm) | |
| Case length | 2.580 in (Script error: No such module "Math". mm) | |
| Overall length | 3.340 in (Script error: No such module "Math". mm) | |
| Case capacity | 105 gr H2O (6.825 cm³) | |
| Rifling twist | 1-10" | |
| Primer type | Large rifle magnum | |
| Maximum pressure | 65,000 psi (Script error: No such module "Math". MPa) | |
| Ballistic performance | ||
| Bullet weight/type | Velocity | Energy |
| 180 gr (Script error: No such module "Math". g) X | 3,056 ft/s (Script error: No such module "Math". m/s) | 3,979 ft·lbf (Script error: No such module "Math". J) |
| Test barrel length: 26" (660 mm) Source(s): http://www.chuckhawks.com/375Dakota.htm, http://stevespages.com/jpg/cd375dakota.jpg | ||
The .300, .338, .375 family of Remington American Magnums was designed by Aleksandr Kolesnikov of Houston, Texas, USA in February 2010. This was a response to the .375 Ruger. It is based upon the .300 RUM case, shortened to 2.580" to fit into Standard length Remington 700 action (firearm), while maximizing powder capacity by using .550" case diameter instead of Ruger's .532".
The RAM case family provides nearly the same performance as the RUM while generating less recoil and using less costly "standard" model 700 actions, rather than more expensive "magnum" actions. This offers a power level between the RUM and WSM cases, while employing sturdy, accurate, plentiful, relatively inexpensive 700 actions.
History[]
In 1999 Remington jumped on the current high performance bandwagon by creating their own beltless magnum. The .300 RUM was the first in a family of new Ultra magnum cartridges[1] based on the .404 Jeffery, later joined by the 7 mm RUM, .338 RUM, and .375 RUM. In addition, Remington later created a shortened version called the Remington Short Action Ultra Magnums to compete with Winchester's line of Winchester Short Magnums.
Essentially a variant of the .375 Dakota, Aleksandr Kolesnikov named the .300 RAM in homage to the Remington Corporation. It is based on the .300 RUM shortened to fit in Remington 700-series Standard length actions. The acronym "RAM" is to specify that it is intended to be capable of taking any North or South American Game animals. Additionally, "RAM" alludes to the speeds attained by Ramjet aircraft engines.
The .300 RAM series cases utilize a larger case diameter than .375 Ruger based cartridge, while still fitting in Standard length Remington 700 action (firearm).
Because the .300 RAM is beltless, it headspaces on the shoulder giving it a potential edge in accuracy over belted magnums, in addition to longer case life. The rebated rim allows this cartridge to be used in an action with a magnum bolt faces (.535 inches).
Comparison[]
| Cartridge | Bullet Weight | Muzzle velocity | Muzzle energy |
|---|---|---|---|
| .300 RSAUM | 200 | 2790 | 3458 |
| .300 WSM | 200 | 2822 | 3538 |
| .300 Win Mag | 200 | 2822 | 3538 |
| 7.62 Jonson | 200 | 2935 | 3826 |
| .300 Wby Mag | 200 | 2987 | 3963 |
| .300 RUM | 200 | 3154 | 4419 |
| .30-378 Wby Mag | 200 | 3160 | 4434 |
| .300 Lapua Magnum | 200 | 3200 | 4585 |
See also[]
Reference[]
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