I think they needed the gun first before coming out in court saying she had been shot. They had to tell the Judge the firearm found is the gun the state believes was used to murder her so it could be entered into discovery. I have always believed they terrorized, tortured, and brutally raped her for days, and then finally shot her.
The news about the weapon believed to have been used in Holly's murder has been out in the media for quite awhile now and even back then the defense was saying the state was going to introduce the firearm as the weapon that caused her death, and that is why the Judge gave them the continuance until 9-11.
So I think a witness is going to testify and that person will be the one who finally gave up the location of the firearm used. It may even be JA or someone else entirely.
:seeya:
JMO