Also at "ballistics by the inch" they shot a SP101 with a 2 1/4" barrel and got over 1000 fps out of Remington Yellow Jackets. So the hyper velocity rounds will get you around 1000. In my LCR 22 the Stingers shoot a pattern instead of a group, so I carry Velocitors with a 40 grain bullet and they gave almost as much velocity as the Stingers. Each to their own.
I like my little LCR very much, and don't want or need a 22 magnum in that short of a barrel. Ruger has said not to expect it in 22 mag as they fear extraction problems from extracting 8 of them at once and some brands of ammo are sticky in the chambers. You really gain very little from 22 magnum in a 2" barrel. LOTS more noise and flash however. I have NAA mini revolvers in 22 magnum, and they rattle the dogs as much as 357 magnum..................