I have tried a lot of different powders including N320, N340, titegroup, and now Alliant E3. I love E3. I can make major PF (171) with only 4.2 loaded long under a 180 gr blue bullet. I also make 130 PF with 2.7 under a 147 gr blue bullet in 9mm. It's the cleanest powder I've shot as well.