OK, I'll tell you why 22 shorts are superior to 22 LR for shooting small game. Of course, for head shots it doesn't matter, they are all the same. But shoot a rabbit in the body with a LR and he will likely take a few jumps before he falls down and dies. Hit him the same place with a short and he likely won't take even one hop, and will be dead in about the same amount of time. No big deal with a rabbit, but shoot a grouse sideways through the body and he flies off far enough that when he quits flying and dies, he is far enough away in the bush, maybe only fifty yards, but you will likely never find him, without a dog. Hit the grouse in the same place with a 22 short and he most likely will just stand there until he falls over dead.