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.50 BMG (12,7 × 99 mm NATO)
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Caliber Specifications:
Caliber: | .50 BMG (12,7 × 99 mm NATO) |
Standard / Datasheet: | C.I.P. |
Bullet Diameter: | 0.510" | 12.95mm |
Primer Size: | Large Rifle Magnum (LRM) |
Max. Case Length: | 3.900" | 99.06mm |
Max. Cartridge Length / OAL: | 5.450" | 138.43mm |
Max. Standardized Pressure: | 53664 psi | 3700 bar |
Case Capacity: | 300.0 Grains of Water | 19.48 cm3 |
CID: | CID_832 |
Last updated: | 2/20/2025 |
- The .50 BMG (.50 Browning Machine Gun), also known as 12.7×99mm NATO, and designated as the 50 Browning by the C.I.P., is a .50 in (12.7 mm) caliber cartridge developed for the M2 Browning heavy machine gun in the late 1910s, entering official service in 1921. Under STANAG 4383, it is a standard service cartridge for NATO forces, as well as many non-NATO countries. The cartridge itself has been made in many variants: multiple generations of regular ball, tracer, armor-piercing (AP), incendiary, and saboted sub-caliber rounds. The rounds intended for machine guns are made into a continuous ammunition belt using metallic links. The .50 BMG cartridge is also used in anti-materiel rifles. A wide variety of ammunition is available, and the availability of match grade ammunition has increased the usefulness of .50 caliber rifles by allowing more accurate fire than lower-quality rounds.
Weight vs. Velocity - Suitable Bullets for this Caliber
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Barrel Length Variation vs. Velocity - by Bullet Weight
.50 BMG (12,7 × 99 mm NATO) load data available with the following bullets:
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Filter by Bullet Weight (Grains)
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