I was not particularly advocating the PM-30. I just figured you might have tried it in your search. You have very obviously done your homework on the rounds and expansion. Kind of neat to hear about the process. Did you try the Remington Viper and Yellow jacket? I haven't been seriously .22 shopping in a long while. My Mark2 loves those rounds though. Very accurate.
I have a "fidget spinner" chambered in .22 Short made by NAA. I love shooting it. It makes me smile. I make believe I am good enough to make face shots at 7 yards. Sometimes I practice quite a bit with it. I generally carry the CCI 27 grain hollowpoints and practice with whatever I can find. Other than a cranio ocular cavity shot, I'm not going to have a great deal of penetration.

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