No they aren't rinos. However simple common sense would tell you a kid who never hunted them before, not sure he has hunted anything before from his post, should be using something that is more forgiving on placement, I have seen shields on boars stop small bullets. A .22 caliber rifle is ok for experienced hunters, I don't think they are ok for novices who never even hunted hogs before and who will be hunting on his own with another novice. I do not think it is the best interest of the OP to encourage him to use that caliber. Just because a caliber can kill an animal is not evidence that it should be used.