I used PP/N340/Univ. for my smoke test. For a quick update, the N340 smoked by far the least. the other two were about the same. I had some rounds with TG, and as you can imagine, it smoked the most. I went from 3.4 to 4.3 of the N340 with a 145 gr. LRN. The difference between the 3.4 - 4.3 as far as smoke, wasn't that much. So if you have lots of blue lube cast bullets you need to shoot, and want to use them for a match, the N340 is a good starter for smoke control.
I will load up some RD tomorrow and see what happens, and report.