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.338 RCM Load Data

Alternative names: .338 Ruger Compact Magnum, .338 RCM

Our load data for caliber .338 RCM covers 148 bullets from 28 manufacturers and a total of 9324 load recipes. In addition, our members have shared 2 load recipes.

The .338 RCM (Ruger Compact Magnum) is a rifle cartridge developed by Sturm, Ruger & Co. in 2008. It was designed as a short-action cartridge that would offer the power of larger cartridges like the .338 Winchester Magnum in a shorter, lighter rifle.The cartridge is based on the .375 Ruger case, which was necked down to accept .338 caliber bullets. The resulting cartridge has a bullet diameter of .338 inches and a case length of 2.015 inches.The .338 RCM is capable of firing bullets weighing between 200 and 225 grains at muzzle velocities ranging from 2,800 to 2,900 feet per second. It is a powerful cartridge that is suitable for hunting a wide range of game animals, including elk, moose, and brown bear.One of the main advantages of the .338 RCM is its compact size, which makes it ideal for use in lightweight, short-action rifles. It also has a relatively low recoil compared to larger cartridges like the .338 Winchester Magnum, which makes it more comfortable to shoot for some hunters and shooters.The .338 RCM has gained a following among hunters and shooters who appreciate its combination of power, accuracy, and compact size. It is typically chambered in bolt-action rifles, and a number of firearms manufacturers produce rifles that are chambered for the .338 RCM cartridge.While the .338 RCM is not as widely available as some of the more established cartridges on the market, it has a dedicated following and is available from a number of firearms manufacturers. It is also relatively affordable compared to some of the larger, more specialized cartridges.

Caliber Statistics

Standard / Datasheet

Primer Size

Large Rifle (LR)

Max. Case Length

71 Grains of Water

Bullet / Barrel Diameter

0.338'' | 8.59 mm

Max. Case Length

2'' | 50.8 mm

Max. Cartridge Length / OAL

2.84'' | 72.14 mm

Max. Standardized Pressure:

62366 psi | 4300 bar

XXL ID

CID_458

.338 RCM load data available is with the following bullets:

(most popular first)

Filter by Bullet Weight (Grains)
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