I saw these were available and was surprised to they are as heavy as the .25 heavy.
http://www.pyramydair.com/s/p/JSB_Beast_Jumbo_22_Cal_34_Grains_Domed_150ct/1331
I see they also show a .22 Ultra shock hollow..
http://www.pyramydair.com/s/p/JSB_Ultra_Shock_22_Cal_25_4_Grains_Hollowpoint_150ct/1330
These 2 should be interesting in a high power .22.
http://www.pyramydair.com/s/p/JSB_Beast_Jumbo_22_Cal_34_Grains_Domed_150ct/1331
I see they also show a .22 Ultra shock hollow..
http://www.pyramydair.com/s/p/JSB_Ultra_Shock_22_Cal_25_4_Grains_Hollowpoint_150ct/1330
These 2 should be interesting in a high power .22.