The 22RF, as in 22 LR, is according to SAAMI spec’s .222. The trouble I see with reloading to a jacketed bullet is the reduced size of the heal. Hornady, if they still do, makes a .222 jacketed bullet, it was for the old 22 Jet and a .223 for the older Hornets. Now back to the heal, I measured some Ely cases, there .008 add that X2 to the .222 and you have .238 plus some for expansion say .001 to .002 and you have a reamer size of .239 to.240. That’s a mighty big reamer. Now lets look at the reloading part, Is it really worth the trouble and danger of pulling the bullets, removing the role crimp and getting a special reamer, or swaggering the heal?