M855A1 enhanced performance round brings more lethality, capability to U.S. Soldiers (video).

Earlier this summer, the Army began shipping a new 5.56mm…

Earlier this summer, the Army began shipping a new 5.56mm cartridge to warfighters in Afghanistan called the M855A1 Enhanced Performance Round. And, as Soldiers normally do when any new product comes their way, the M855A1 has become a hot topic during their ritual debates on guns and ammo.

The new round replaces the current M855 5.56mm cartridge that has been used by U.S. troops since the early 1980s.

The M855A1 is tailored for use in the M-4 weapon system but also improves the performance of the M-16 and M-249 families of weapons. The M855A1 has shown improved hard-target capability, more dependable, consistent performance at all distances, improved accuracy, reduced muzzle flash and a higher velocity.

During testing, the M855A1 performed better than current 7.62mm ball ammunition against certain types of targets, blurring the performance differences that previously separated the two rounds. The projectile incorporates these improvements without adding weight or requiring additional training.

Overall, the Army fired more than 1 million rounds to ensure the new cartridge met or exceeded all expectations. I can honestly say that the M855A1 is without question the most thoroughly tested small caliber round ever fielded.

Source: Armed with Science

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  • jman

    Your right Don! I was not involved in any million rounds of testing. To compare two different types of bullets and the results in this article has very weak details. When I read something Im a spong and want all the information not just words like “blurring the performance differences” or “certain types of targets”? Really I want details if I had to use this is in a fight what would can I expect? or better yet what were the details on its performance? The fact the most vets who relied on both of these bullets say the 556 is a great round. It does its job and you can hold more. On some occasions it took more rounds to put the enemy in his grave. where the 7.62/308 took the fight right out of them, Done, over, not rise back up and keep shooting at you so you have to shoot more rounds to put them down. So internet commando that tough guy and listen to what I was saying or better yet just making a opinion on what I felt was worth putting on this screen. I am a active shooter who has shot thousands of both rounds and would trust my life with either one. Given the choice if I could only choose one would be the 7.62 knowing it does more damage. Even if I could only cary half the rounds! Don I would only really get offended if I was a internet geek commando type dude that never goes shooting or shoot a couple of times making me cool. I carry conceled all the time. I have the permit, I shoot on average 3-4 times a month and it should be more but damn its a expensive habit. Hey look through the internet and read what some folks are saying and hell if you shoot try it out…like taking heavy fabric and cover some melons or soft objects and see the results I have and its very interesting to see how different rounds react to different material/objects… Curious then go do it and try not to assume the person typing doesn’t know crap. Internet commando bah.. I read then do! How about you don??? oh wait your a cop..no wait a soilder… no better yet one of the guys that did the testing… Give me a break fool… Stay low, Shoot straight, Watch you six love that quote..

  • Don

    jman…how long were you involved in the million rounds of testing. I love internet commandos, and their vast knowledge.

  • jman

    “certain types of targets”??? the 7.62×51 is far superior to the 556×45 no matter how you build it. Please if you write about this with knowledge then come from knowledge. Know that 556×45 and 7.62×51 are two completely different calibers with different results…. unless??? you built a completely new 556 that is explosive? or maybe heavier? NOT!!! The 556 is a great round, okay you made it better? Please fool someone from across lines and not us here at home. We know better! Reading about the 7.62/308 it will stop you one to two rounds! 556×45 will stop you two to four rounds! “unless your really good at shot placement and it is done with perfection”. No matter how bad you make it…. please do not sell me on the lighter bullet is better than the heavier one, Come on….!!

  • AngryWhiteMale

    I haven’t heard anything from downrange that would lead me to belive that this round is the equal of the 7.62, much less superior.