Finally,,, something I know about.
I own a Phoenix HP22 and it has never worked well.
I experience at least one "fail to fire" in each magazine,,,
Type or brand of ammo does not seem to make a difference.
I sent it to Phoenix and they returned it "repaired",,,
The danged thing still doesn't work properly.
I can see that the firing pin does not always extend out to where the hammer can strike it.
When it does, the cartridge fires,,,
When it doesn't, the cartridge never fires.
I have been told by knowledgeable people that it is just gummed up,,,
I tried their recommendation of spray cleaner but to no avail.
I can't say the pistol is a downright dog,,,
I can say mine has never worked properly.
Makes a great paperweight though.