M634 Experimental High-Powered Semi-Armor-Piercing: Difference between revisions

'''M634 Experimental High-Powered Semi-Armor-Piercing''', abbreviated as '''M634 X-HP-SAP''' and also known as the '''9.5x40mm KURZ''',<ref name="art3">'''[[The Art of Halo 3]]''', ''page 57''</ref><ref group="note">''Kurz'' is a German word for "short".</ref> is a 9.5x40mm rifle cartridge made specifically for the BR55 series and BR85 series.<ref name="waypoint">[http://www.halowaypoint.com/en-us/intel/inteldetail/db7b9dd9-da87-4309-8064-9c3f7edb0e68/battle-rifle?category=weapons '''Halo Waypoint''': ''Battle Rifle'']</ref>

==Overview==

The M634 X-HP-SAP was developed in conjunction with the prototype [[XBR55 Battle Rifle]]. As an experimental round, its use is only limited to the [[BR55 Battle Rifle]], the [[BR55 Heavy Barrel Service Rifle]], and the [[BR85 Heavy Barrel Service Rifle]].

Performance-wise, this round is accurate enough that the 2x scope on the Battle Rifle is useful. Even when fired in three-shot bursts, the round produces little recoil resulting in very little muzzle lift. It is more effective against both shielded and unshielded [[Covenant]] personnel than the [[M118 Full Metal Jacket Armor-Piercing|M118 7.62x51mm round]], as the increased accuracy leads to an increased kinetic energy of the round leads to faster shield depletion and increased damage to unshielded enemies. Overall, the M634 X-HP-SAP round provides good accuracy, controllability, and effectiveness against all personnel.

==Properties==

As designated in its name, the M634 X-HP-SAP is an experimental round. It uses a special propellant that allows it to achieve a higher muzzle velocity than the M118 7.62x51mm round while using a smaller cartridge. It is also semi-armor-piercing, meaning that it mixes the properties of an [[armor piercing round]] with the properties of another type of round. The second type is unknown, though it is most likely similar to the [[M225 SAP-HE]] used in the [[M6 Series]].