i shoot anything and everything through mine without a hiccup. i have shot WWB and didnt have a problem. i've mixed rounds in mags and still no problems. i mostly shoot magtech through it (cheapest i can get) and also remington hollow point (walmart green/white box....again, cheap). both of those shoot just fine.
this is a fighting pistol, it can handle whatever you feed it and keep eating. get it and you will not be let down.
btw, i paid $575 for mine...its the bi-tone stainless version (as can be seen in the pics). it was brand new and also came with the FNH shooter's pack designed just for the FNP45 (made by blade-tech).