It is all circumstantial evidence.
I doubt if the country knows who killed Kirk. The accused gunman currently charged with Kirk’s murder shows no viable method of carrying a single bolt gun on the stairs or exiting the grounds. A backpack will never hold a single shot bolt gun. A single shot bolt gun will never fold down that far to allow covert possession in a backpack.
False confessions for committing a murder occurs up to 25 percent (click here). We frequently hear how those investigating a murder are swamped with information to sort through. The Kirk murder is circumstantial.
Besides that, open discussion of murder can contaminate the jury pool. No one should be seeking a mistrial because of social media posts.
Single shot bolt guns are used a great deal during accuracy contests. Those guns are rarely used, even in hunting. But, they can be accurate if game animals are not elusive. It takes a while to set up an accurate shot.
