There are also questions about the bullet as the choice for .30-06 is very wide.

I haven't heard whether they've recovered the bullet that killed Charlie. They'll need that to tie the rifle to the crime and the bullet will need to be in halfway decent shape.

Also, questions about how he concealed the gun. In the 'limping' video he appears to be holding the buttstock with his right hand to keep it from flopping around. That would make the rifle maybe 42" long, which seems about right. But where was the rifle when he jumped off the roof?