What bullet diameter is .300 Ruger Compact Magnum?

.300 Ruger Compact Magnum uses a 0.308″ (7.82 mm) diameter bullet.

Is .300 Ruger Compact Magnum still in production?

.300 Ruger Compact Magnum is discontinued; typical availability is limited.

What is .300 Ruger Compact Magnum used for?

.300 Ruger Compact Magnum is primarily used for hunting.

What is .300 Ruger Compact Magnum based on?

.300 Ruger Compact Magnum is derived from the .375 Ruger case.

Rifle · SAAMI

.300 Ruger Compact Magnum

.300 RCM300 Ruger Compact Magnum

Short-action, beltless .30-caliber magnum jointly developed by Hornady and Ruger..

Identity

Introduced: 2008
Type: Rifle
Origin: United States
Inventor: Hornady and Ruger
Manufacturer: Hornady / Ruger
Standard: SAAMI
Status: Discontinued
Availability: Limited

Dimensions

Bullet ⌀: 0.308″
Case length: 2.1″
Overall length: 2.84″
Base ⌀: 0.532″
Rim ⌀: 0.532″
Primer: Large Rifle Magnum
Case type: Rimless

Performance

Max pressure: 65,000 psi

Ballistics

Published velocity/energy data isn't available for .300 Ruger Compact Magnum — an obsolete/collector cartridge. Parent case: .375 Ruger.

Reloading cost

Estimate your cost per round and how it compares to factory. Inputs are yours — nothing is stored.

Powder $/lbCharge (gr)Bullet $/eaPrimer $/eaBrass reusesBrass $/ea

Cost estimate only — not load data. Charge weight is your input; follow published manuals for safe charges.

Firearms chambered in .300 Ruger Compact Magnum

2 models in the database chamber .300 Ruger Compact Magnum. Browse all →

Ruger Hawkeye FTW Hunter .300 Win Mag 22-inchRuger Hawkeye Compact Magnum .338 RCM 20-inch

Lineage

Immediate parent

.375 Ruger

Size vs parent — to scale

Drawn to one scale from published dimensions. Bottleneck shape is approximate (shoulder geometry not recorded).

Family TreeOpen .300 Ruger Compact Magnum in the interactive cartridge family tree↗

Connected reference

FirearmsFirearms in .300 Ruger Compact Magnum↗

History

Introduced 2008 with the Ruger Hawkeye; the .30-cal member of the Ruger Compact Magnum family. SAAMI MAP 65,000 psi.

FAQs

What bullet diameter is .300 Ruger Compact Magnum?: .300 Ruger Compact Magnum uses a 0.308″ (7.82 mm) diameter bullet.
Is .300 Ruger Compact Magnum still in production?: .300 Ruger Compact Magnum is discontinued; typical availability is limited.
What is .300 Ruger Compact Magnum used for?: .300 Ruger Compact Magnum is primarily used for hunting.
What is .300 Ruger Compact Magnum based on?: .300 Ruger Compact Magnum is derived from the .375 Ruger case.

Data & sources. Specs compiled from the Lindcott Armory reference; the trajectory is modeled (point-mass), not measured. Spotted an error? Report it →