BBM
I respectfully disagree. It doesn't take days (or even hours) to load and fire that gun into the water barrel, retrieve the bullet and compare the markings on it to other bullets recovered from previous crimes. It just doesn't. Now, DNA and fingerprints and stuff like that yea. But just ballistics on the markings - nope.
And with this crime being so high profile - that gun will be the top priority in the lab.
Those ballistics have already been done and results are entered. I also believe that the Grand Jury was presented with that as well. They don't have the results back yet.
JMHO
I am only repeating what the Police Chief said yesterday. He said it "could take days" for the reports to come back.