I have both Crane NSWC and the FBI testing results for the 5.56 (and others) for anyone here that would like them. I can put them on a disk and send it to you, as well as some other usefull stuff I have accumulated like the Marines study of the 5.56 effectiveness after Faludja. Or I can email it to you if you can receive large files.
Just send me an email at
James@fbmginc.com with tests results in the title. And yes, according to both if the right grain weight is twisted properly it will fuck your day up.