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30 mm caliber - definition of 30 mm caliber in Encyclopedia (197 words) |
 | The 30 mm Caliber is a standard size of heavy machine gun (specifically autocannon) ammunition used by NATO forces. |
| The round itself has a length in the range of 8 to 12 inches (200 to 305 mm) while the projectile is ranges from 4 to 6 inches (100 to 150 mm). |
| Unlike its cousin the 25 mm round, the 30 mm is not typically an anti-personnel round. |
| .50 BMG - Wikipedia, the free encyclopedia (493 words) |
| The.50 Browning Machine Gun (12.7×99 mm NATO) or.50 BMG is a cartridge developed for the M2 machine gun and is now also used in long-range target and sniper rifles. |
| The actual specified maximum diameter of an unfired.50 BMG bullet is.51 inches; while this appears to be over the.50 inch (12.7 mm) maximum allowed under the National Firearms Act, the barrel of a.50 BMG rifle is only.50 inches across the rifling lands, and slightly larger in the grooves. |
| The Barret M82.50 Caliber rifle and later variants were born during the 1980s and have upgraded the military sniper from a heavy nuisance to a threat. |
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