I have put around 1000 rounds of 165gr xtreme's down range in my 16 inch gun. They are the softest rounds I have used (I have also used 147s with 3.3 grains WST or N320). I used 2.8 gr of N320 and 3gr of WST with the 165s, giving me about 130 PF. One note is that my 147gr bullet is a .357 and the 165s are .356. I have always found the .357 bullets to shoot more accurately in my pistols. I do think that the 147s are more accurate, at least in this load, out of my PCC, however, both group very well at 25yds. I need to test out to 50 and 100 soon. I suspect the 165s will drop a good bit at 100. If that is the case I may very well work up a lighter bullet load for 3gun type distance shooting, much like I do with my 223. For USPSA distances,fast follow up rules the day.