She warned you not to cheat on her!
The .50 BMG cartridge is also used in long-range target and sniper rifles, as well as other .50 caliber machine guns. The use in single-shot and semi-automatic rifles has resulted in many specialized match-grade rounds not used in .50 caliber machine guns. A McMillan Tac-50 .50 BMG sniper rifle was used by Canadian Army Corporal Rob Furlong of the PPCLI to achieve what was then the longest-range confirmed sniper kill in history, when he shot a Taliban combatant at 2,430 meters (2,657 yards) during the 2002 campaign in the Afghanistan War. This record was surpassed in 2009 in Afghanistan by a British sniper, though using a .338 Lapua Magnum (8.58×70 mm) rifle. That record was surpassed in early 2012, when an unknown Australian sniper recorded a kill at 2815 meters (3079 yards) using a .50 BMG M82A1
A former record for a confirmed long-distance kill was set by US Marine sniper Carlos Hathcock in 1967, at a distance of 2,090 meters (2,286 yd). Hathcock used the .50 BMG in an M2 Browning Machine Gun equipped with a telescopic sight. This weapon was used by other snipers, and eventually purpose-built sniper rifles were developed specifically for this round. DARPA (Defense Advanced Research Projects Agency) has developed the EXACTO program, .50 caliber bullets complete with microprocessors and steering vanes that allow the bullet to adjust its trajectory mid-flight to stay on target when the flight path has been altered by uncontrollable variables.
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.
Barrett M82CQ (a carbine version of the M82A3
Bushmaster BA50 carbine (22" barrel version of the BA50)
Accuracy International AW50
Accuracy International AS50
OM 50 Nemesis
Anzio Iron Works Anzio-50
Pindad SPR-2 and Pindad SPR-3
Bluegrass Armory Viper
East Ridge / State Arms Gun Co. Inc.
Bohica MK III AR-15 Upper
Bushmaster BA50 Rifle
L.A.R. Manufacturing, Inc. Grizzly Big Boar
POLY-Technologies M99-II and M99B-II
Ramo M600 and M650
Safety Harbor Firearms SHF/R50
Serbu Firearms BFG-50 (single shot bolt action) and BFG-50A (Semi-Automatic)
Spider Firearms Ferret 50
Steyr HS .50
TGR Co. LLC $1599 Noreen 50 BMG
Gepard anti-materiel rifle
Zastava M93 Black Arrow
PGM Hecate II
Vulcan Armament V50
EDM Arms Windrunner
Zel Custom Manufacturing/Tactilite
M2 Browning machine gun
M85 machine gun
MAC-58 - did not enter production
Rolls-Royce Experimental Machine Gun - only built as prototype