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7.62x51mm

From Halopedia, the Halo wiki

An overview of the M118 round.

The M118 Full Metal Jacket Armor-Piercing[1] is a 7.62×51mm rifle cartridge commonly used in the United Nations Space Command's MA5 series of assault rifles.

Overview

The M118 FMJ-AP round is the standard-issue 7.62x51mm ammunition utilised by the the UNSC Armed Forces, with other options including 7.62x51mm shredder rounds. Its armor-piercing properties stem from its specially hardened construction.[2] It can be regularly found in 120-round packs wherever UNSC forces utilising MA5 series rifles are engaged.

The following weapons in UNSC usage are chambered for 7.62x51mm ammunition and typically make use of M118 FMJ-AP rounds;

Performance

Weapons chambered for 7.62x51mm ammunition such as the MA5B assault rifle are considered to be powerful by UNSC soldiers.[2] UNSC infantry combat armor is capable of preventing lethal penetration at close range from a limited burst,[3] though infantry and even light vehicles or aircraft such as un-shielded Covenant Banshees are easily susceptible to fatal damage under sustained, accurate fire.[4] Energy shields drastically reduce the ammunition's stopping power, as a great deal of concentrated fire from multiple weapons - or an extended period of continuous automatic fire from a single weapon - is needed to overwhelm them utilising this round.[2]

Real world background

Wikipedia.png
There is more information available on this subject at 7.62×51mm NATO on the English Wikipedia.

The 7.62×51mm NATO round was originally developed by NATO, a military alliance between national governments, in the middle of the 20th century. It was developed to be reliable when used in fully automatic weapons, to have a large punch, and to standardize service rifle calibers between governments, in order to improve logistics. It replaced a variety of smaller ammunition and largely achieved the goals of development.

Gallery

List of appearances

Sources