Mostly, enough to get through anything out there.... but....
There were a number of different panzerfausts. If you do a web search, there's a page which lists the different fausts and has all sorts of info. Panzerfausts were mostly designated by effective range - hence the pz faust 30, pzfaust 60 and pzfaust 100. 30 60 and 100 metres effective range. The original designation was faustpatrone and the first issued were prototypes which were almost as dangerous to user as enemy... There was a pz faust 250 being worked on at wars end but not in usem or at least definitely not in general use. It's possible the late war version - a faust 100 could maybe reach 300 meters, but this would be with a very slim chance of hitting a tank. The low muzzle velocity ( comparisons of which IIRC I previously posted ) meant the projectile followed very much an arc. The hollow charge/monroe effect principle used by pz faust, bazooka, shreck and piat are not reliant on kinetic energy. Hence the range didn't effect penetration.
Tank vets talking of being in combat against late war ( green, almost untrained ) german infantry mention how they'd be prone to firing at beyond effective range and they could see fausts fly up in the air... drop to the ground ahead of their tanks.
Andy O'Neill
www.l-25.demon.co.uk/index.htm