Unfortunately, probably not as well as you'd like, borg.
If you remember, when Mike Pouncey and the Dolphins came to Foxborough last fall, they gave him a subpoena to appear in front of the grand jury for some unknown reason. At the time, it was reported that they were interested in some type of "gun ring" that linked Hernandez (and possibly even Bradley) to Florida. No one knew if Pouncey was a witness, suspect, or another one of Hernandez's murder attempts (not really).
It's still unknown what happened to this--if anything at all. For all we know, Pouncey could have simply been some type of witness to something that Hernandez said at one point or another, but there were rumors of some kind of gun ring that was supposedly transporting firearms from Mass/Conn to Florida and back. Again, it could have been nothing more than a couple of times that it happened, or it could have been a handful of times or even more. We do know that
at least one of Hernandez's guns in custody had been purchased in the state of Florida, but that's about it.
As someone else mentioned, it's probably unlikely that the feds would trump the state murder charge(s), unless it were directly linked and a much bigger story came out. I think the odds of that are probably pretty unlikely, but there's certainly a possibility that there's more to the story, that will make it somehow even stranger than it already is!!