[Sgt_Schultze]

Maybe I'm giving the sniper too much credit, but he has eluded capture now for two weeks. Since the tarot card was planted, it is likely the shell casing was as well. It may have been from an earlier shooting, and placed at the scene with the before the shooting. The sniper could have backed up further along the same line of sight and shot from a different location.

[Dog Gone]

Regardless, the sniper was at that location, and while he was probably careful enough not to leave a fingerprint, he did leave a scent. It doesn't matter whether he actually fired from that location or not in that regard, although I suspect that he probably did.

[Shooter 2.5]

Since the tarot card was planted,

Who told you that?