I have had good luck with VV N110, if you can find it. I have shot this with bullets from 125 - 158 grains and all shoot well, with low standard deviations over the chronograph. Velocity wise I have good luck with Aliant 300 MP.
I just bought one of the new SP101 327's yesterday. Have not had it to the range yet. I had the same thought about those stock grips, as this caliber can be quite a handful to hold on to. I have one in the Blackhawk and I changed this to the Hogue grips to make it more comfortable to shoot...