Here's my N320 loads I made up and put through the chrono. Everything remained the same, just changed powder.
3.0 gr N320
Avg velocity 885
PF 130.98
3.2 gr N320
Avg velocity 966
PF 142.97
The comparison between the two was very different. The autocomp load has more "flip" then the N320 which is expected due to it being a slower powder. The N320 has a nice quick "push" and small "flip" is the best I can describe it. We all know the slower powder is going to do what I described above. I just wanted to experiment since I had both powders available.