Green tips tumble and frag?

[Cato]

Do green tip 556 rounds tumble and frag in a similar manner as regular 556?

[kurac]

By regular 5.56 I would have to assume you mean M193 or 55gr FMJ's. I think the answer is yes, the green tips or M855 are 62gr and a bit longer than the 55's which should make them more likely to tumble. Not sure what to say about framentation though, I guess it depends on the type of material and the distance from the weapon

[JeffM]

Anyone interested in Terminal Ballistic Performance should go here and read the stickies. The Doc knows what he's talking about:

http://www.m4carbine.net/forumdisplay.php?f=91

[Toast]

Do green tip 556 rounds tumble and frag in a similar manner as regular 556?

If the velocity is high enough, but I've read in a couple different places that even then they're don't reliably frag because of how they're made and have slight manufacturing differences.

[vwynn]

im still curious what would happen if one were to pick up the ar15 first in a HD situation... if the bullet would pass through the bad guy... or tumble... testing shows numbers... but then again real life stories would help much more IMO

[SixPointEight]

some combination of both in all likely hood. There's been talk of m855 completely passing through people and leaving pretty much minuscule wounds on people in A-stan. Though, there are SOME instances of m193 doing the same thing. In reality, M193 is one of the better rounds for HD distances. The 77/75grs are good too. If all you have handy is m855, then I'd use that.

[vwynn]

4 outta 5 mags are loaded with M855 Xtac and the other mag is loaded with federal m193.. in case i need to change it up lol...

[Cato]

Anyone interested in Terminal Ballistic Performance should go here and read the stickies. The Doc knows what he's talking about:

http://www.m4carbine.net/forumdisplay.php?f=91

This is very helpful; thanks!