Demolition Ranch, Officer Greg and Kentucky Ballistics have all done videos on it.
I am not impressed, although it does possess fairly good ballistics for a small calibre pistol/revolver round.
It has about the same power, I guess, as a warmly loaded .22 Hornet - from a revolver. Seems to me, 40gr. at about 1,500fps.
A longer barrel would, of course, increase the ballistics, but still less than a .22 hornet from a rifle, especially a modern rifle like CZ or Anschutz.