2006年8月30日 · The wound ballistics of the U.S. military Olin M193/Winchester 55 grain FMJ (X223R1 or Q3131) and green tip U.S. military Olin M855/Winchester 62 grain FMJ (RA556M855) cartridges makes them an adequate choice for use against violent criminal offenders.

2020年1月29日 · M855 “green tip” ammo features a 62-grain, mil-spec “penetrator” bullet designed for better long distance performance and penetration of light barriers. M193 is a slightly lighter, 55 grain projectile. M193 rounds are typically faster than M855 loads by about 10%. Civilians and Mil-Spec Ammunition

Figure 6: Wound profile of 62gr M855 bullet from M16A2 (5.56x45mm NATO) The longer 5.56mm bullets (M855, SS109) need a higher rotational velocity to maintain stabilisation in air. FN claimed that this faster rotation also causes the SS109 to have a significantly longer path in tissue before marked yaw occurs, thus producing wounds of less severity.

Against small statured or thin combatants, the M855 has little chance of yawing before passing through cleanly and leaving a wound cavity no bigger than the bullet itself. The factors of impact angle and velocity, instability distance, and penetration before yaw reduce the round's predictable effectiveness considerably in combat situations.

M193 does seem to have a bit better penetration than M855 as well. Typically the nose of the bullet ends up penetrating to 13-14.5", traveling backwards through tissue. Superimposing the 5"-6" depth wound cross-section on the human torso, adjusting for size, reveals the probable effectiveness of the round.

2014年5月21日 · The U.S. Army replaced its green-tipped 5.56x45 mm NATO, M855 standard ball cartridge in June 2010 with the lead-free, or “green,” M855A1 cartridge.

2022年6月17日 · M855 ammunition, also known as “green tip” ammo, is a type of brass-cased, lead/steel-core hybrid rifle ammunition in 5.56x45mm NATO. It is a 62 grain bullet with a steel penetrator tip and a full metal jacket (made of copper). The M855 has been the standard issue rifle ammunition for the U.S. Military since 1983.

NATO M855 / SS109 5,6 x 45mm The slightly heavier and longer American M855 bullet shot from the M16A2 assault rifle is replacing the M193 bullet shot from the M16A1 as the standard bullet of the US armed forces.

2015年10月17日 · M855A1 is the Army’s new round; it boasts improved accuracy, penetration, and terminal effectiveness vs. the legacy M855 “green tip” round. We previously covered the story of M855A1, and Major Glenn Dean’s history of the round’s development, but how does it really perform? Fortunately, The Wound Channel has come into possession of ...

2022年3月13日 · *M855 from the 11.5-inch barrel produced two separate wound tracks. It opened up around the 6-inch mark and produced a wide wound cavity of around 14 inches. The bullet (mostly intact, but with some fragmenting) came to rest at the 22-inch mark. Pretty impressive, considering the violent wound cavity initially, and then the following penetration.