Is that more to do with the enemy they have faced rather than the ammunition?.I think I would be right in saying that the British army hasn't faced an equally well trained and disciplined regular army that were equipped with an AK, ie the Soviet Union/Russian Federation.The NVA and Vietcong sent enough GI's back to the States in bodybags with the M43 round, they would regularly drop US troops in the paddyfields at 500m with it.I remember reading an account of a US firebase being over-run where a Vietcong soldier was running for the command post with an explosive charge on his back.Despite being hit by multiple 5.56 rounds from an M16 he continued running until an Australian trooper with a 7.62x51 FAL dropped him with one shot.A bigger heavier round will drop an enemy more effectively than a lighter round ever will.tackb wrote:I may stand to be corrected but I don't think the M43 has ever won in a fight against British soldiers expressing their feelings with 5.56 ammo !
" If 5.56 mm bullets fail to upset (yaw, fragment, or deform) within tissue, the results are relatively insignificant wounds. This is true for all 5.56x45mm bullets, including both military FMJ and OTM (open tip match) and civilian JHP/JSP designs used in law enforcement. As expected, with decreased wounding effects, rapid incapacitation is unlikely: enemy soldiers may continue to pose a threat to friendly forces and violent suspects can remain a danger to law enforcement personnel and the public.
This failure of 5.56x45mm NATO bullets to yaw and fragment can be caused by reduced impact velocities as when fired from short-barreled weapons or when the range to the target increases. Failure to yaw and fragment can also occur when the bullets pass through only minimal tissue, such as a limb or the chest of a thin, small statured individual, as the bullet may exit the body before it has a chance to yaw and fragment. Two other yaw issues: Angle-of-Attack (AOA) variations between different projectiles, even within the same lot of ammo, as well as Fleet Yaw variations between different rifles, were elucidated in 2006 by the Joint Service Wound Ballistic Integrated Product Team (JSWB-IPT), which included experts from the military law enforcement user community, trauma surgeons, aero ballisticians, weapon and munitions engineers, and other scientific specialists. These yaw issues were most noticeable at close ranges and were more prevalent with certain calibers and bullet styles — the most susceptible being 5.56x45mm NATO FMJ ammunition like SS109/M855 and M193.“
—Dr. Martin Fackler, head of the Wound Ballistics Laboratory for the US Army’s Medical Training Center, Letterman Institute