I think you'd still get better velocity with the Magnum and you have more traditional style bullets from FMJ flat nose bullets to lead core expanding hollow points. Most slow burning rifle powders are burned within the first couple inches of the barrel and there is nothing slow about .22 Magnum powder. I guess it depends on if what you are doing with the revolver would be stretching the limits of the .22lr already. Either one would be a great little gun.

Maybe some google searching would come up with something.

I thought I remembered that the ballistics were very close between the best .22LR and the .22WMR, and neither one is particularly good.

be more like a centerfire bullet so it is not just velocity it is also bullet construction.

ex LEO types I know have all recommended the .22 mag in a 2" J or other lwt gun.

--
Of the Troops & For the Troops

Personally, the .380 with ball is as low as I'll go for a defense round. But here are some results if you're interested in them-

http://beckertactical.blogspot.com/2013/05/22-magnum-ammo-tests.html

I use to tell people CCI Stingers were a lot better than 22 mags in revolvers with barrels under nine inches because the barrels were too short to get the benefit of the magnum ammunition. I based that on shooting over my chronograph. I no longer do that because I have learned it is very hard to get accurate reading of .22 ammo on most chronographs. You need a good chronograph and some good conditions to get readings with trustworthy results. Today the makers have changed the ammo used by the self defense market so my results would not be up to date anyway. 22 magnum is never as good in a handgun as it is in a rifle, but that is true of any centerfire round also. It doesn't mean you should not use it in a handgun if it is a round that is up to the task. Today I just warn people to research it so they choose the best available load for their use. For myself I still use 22 magnums in rifles only and CCI Stingers or Velociters in handguns.

My Smith chonoed an average 912 fps with Fed HP bulk pack LR. Pretty sure a WMR would beat that.
But the LR was fine for purpose.