That's true, Gary Rhoden's dad mentioned the different types of shells at his crime scene. But that just makes me wonder why LE took a year to search the Wagner place if they could match cartridges for ballistics. We've talked about this before, there had to be more crime scene clean up than just picking up cartridges (which they didn't do effectively). It was hinted that they removed security cameras, but recently Leonard Manley stated that one camera was overlooked.
In one of Leonard's recent video interviews, he stated police saw 2 people on one of the cameras that were missed by the perps. So it seems there was at least some evidence left behind. Seems like it would have been enough to get a search warrant for the Wagner property a long time ago. JMO.