I see no reason to get the police involved here.
Send the guy a certified letter saying that if he doesn't pick it up within a certain amount of time you are going to assume ownership of it. If he picks it up... fine. If he doesn't... fine. You now own a .22 rifle. Nothing illegal about it whatsoever... plus you have the letter to prove you tried to return it.
Send the guy a certified letter saying that if he doesn't pick it up within a certain amount of time you are going to assume ownership of it. If he picks it up... fine. If he doesn't... fine. You now own a .22 rifle. Nothing illegal about it whatsoever... plus you have the letter to prove you tried to return it.