The story of .22 rimfire is interesting. The .22 short was the first caliber/ cartridge used by S&W (Model 1). The .22 LR was well balanced and some claim the most accurate cartridge prior to WWII. The .22 long has fallen pretty much by the wayside; its .22 short bullet and its .22 LR case were a mismatch. The .22 short has found a home in match pistol and getting rid of pests on the quiet side. Th .22 LR is used for almost everything else. I believe I have 2 boxes of longs and I expect they will be passed to my grandson as a curio.