Back when I was a kid a had a .22 that could handle long rifle, long, and short ammo. The magazine had a little slider doohicky you used to set it for the size of ammo you wanted to use. Unfortunately that rifle "disappeared" about the time I moved out of my ex-wife's place. I seem to recall that it was a Marlin but I'll be darned if I can remember the model. The reason I ask is this: I can see a situation where I might be going after small game, say picking squirrels out of the trees. As close as I can get a squirrel, a long rifle round seems like a bit of a waste - more power than I need and more noise than I need to make. Yeah, I know, I'm obsessing about sound, but that's an important consideration to me. Most of the places I've lived any place that would support hunting was generally heavily hunted, and in a post-fan situation I wouldn't necessarily want to advertise the fact that I was hunting. So, does anyone have any experience with a .22 that can handle both long rifle and short ammo? I'd prefer a semi-auto but a tube feed would be ok too.