Got a grey squirrel at about 20 yards, dropped down with a headshot, no twitch. I went to check on him and he wasn't moving. They don't all seem to do the dance when headshot, or even twitch.
Then seemed to miss the next three shots. I'm using the H&N Terminator .22. What I credited to perhaps good placement and really good expansion on the first one, I now am starting to take away and wonder if they were all fliers or if I was missing so much at the same distance due to sheer incompetence. I'll have to do some more target shooting to check for consistency.