The .50 Beowulf cartridge stands as one of the most unique contributions to the world of modern big-bore ammunition, tailored primarily to suit the AR-15 platform. Developed by Alexander Arms in the early 2000s, it was designed to deliver maximum stopping power at relatively close ranges. Its inception targeted law enforcement and military needs, offering significant terminal performance in scenarios requiring increased penetration and knockdown force beyond what the standard 5.56 NATO round could provide. The .50 Beowulf’s history is one of innovative adaptation, extending the capabilities of the popular AR-15 platform to roles historically reserved for much larger, heavier rifles.
In practical application, the .50 Beowulf is predominantly appreciated for its use in hunting, self-defense, and specialized tactical contexts. Its capacity to cycle reliably in modified AR-15s makes it attractive to shooters who desire greater power without shifting to an entirely new rifle system. The caliber has found favor among wild boar hunters and others targeting large and potentially dangerous game at close to moderate ranges. Home defense enthusiasts, especially those living in regions where animal threats are a consideration, may also leverage the Beowulf’s ballistic efficiency and significant stopping power. For law enforcement, it offers the capacity to neutralize threats behind barriers that would defeat traditional intermediate cartridges.
When it comes to target species, the .50 Beowulf excels in hunting medium to large North American game. This includes animals such as deer, hogs, black bear, and even elk at ethically responsible shooting distances, typically under 200 yards. The immense kinetic energy delivered on impact ensures quick, humane kills when shots are well-placed. Some users have employed the .50 Beowulf for pest control on tough animals like feral hogs, especially in heavily wooded or overgrown environments where encounters tend to be at shorter distances. Its substantial wound channel contributes to effective lethality even on resilient species.
Bullet weights for the .50 Beowulf typically range from 300 grains up to 400 grains, with the majority of factory loads centered between 325 and 350 grains. Projectiles may be soft point, hollow point, or full metal jacket, depending on the intended application. Muzzle velocities generally fall between 1,700 and 2,000 feet per second, generating well over 2,200 foot-pounds of energy at the muzzle. The cartridge utilizes a rebated rim, allowing it to function with standard bolt carrier groups in AR-15s, though a dedicated bolt is required. The Beowulf runs at moderate pressures, resulting in manageable recoil but significant stopping power, characteristics which make it a standout choice for reloaders who favor versatility, reliability, and a unique ballistic profile tailored for close-range dominance.
Suitable Powders
Bullet Weight (gr) -> | 0-50 | 50-75 | 75-100 | 100-150 | 150-200 | 200-300 | >300 |
|---|---|---|---|---|---|---|---|
Hodgdon LilGun | 👍 | 👍👍 | |||||
Vihtavuori N110 | 👍 | 👍 |
👍 ... suitable powder
👍👍 ... suitable AND popular powder among our reloading community (clasification might evolve as more community members share their loads )
Caliber Specifications
Standard / Datasheet
Primer Size
Large Rifle Magnum (LRM)
Case Capacity
69 Grains of Water
Bullet / Barrel Diameter
0.5'' | 12.7 mm
Max. Case Length
1.65'' | 41.91 mm
Max. Cartridge Length
2.25'' | 57.15 mm
Max. Standardized Pressure:
33359 psi | 2300 bar
XXL ID
CID_828
.50 Beowolf load data is available with the following bullets:
(most popular first)









