I have a 351PD and the trigger will smooth out somewhat over time. Mine is not bad but yes the very light weight in a rimfire lock work tends to be a bit heavy in DA. Its a handy little pocket gun but mostly best used for up close target distances.
I did chrono mine (through my cheapie chrono) and I get on average a range of 1050-1060 FPS with both 40 grain CCI Game Points and 40 gr. Winchester FMJ. The Winchesters shoot best out of this gun and chrono more consistently. Your results may vary.