Another update on this. I got the mantisX and did some testing to see if I would give me a better idea of what was going on.
As a baseline I did some dry fire over a few days was was averaging around a 96 for standard open practice. Then I did some live fire testing with 4 powders (100 rounds of each) over 2 days (Bullseye, Win 231, True Blue and Clean Shot).
With Bullseye, Winchester 231 and True Blue I was scoring around a 91-92 over the course of each test for each of these powders (the only complaint the mantis had was too little trigger finger on some of the shots). I was consistent with my shooting, my accuracy was good and all 3 powders felt reasonably smooth. When I tested Clean Shot, my first 20 rounds were not as consistent but after that I tightened things up. According to the MantisX, I averaged 81 with Clean Shot, even after I got my groups reasonably accurate. It basically said I was pushing. I suspect this confirms what I was noticing about the punchiness of Clean Shot. While the recoil was extremely light, the rise was so sudden that unless I compensated by adjusting my grip it was affecting my accuracy.
Surprisingly, I didn't find Bullseye to feel punchy despite being a faster powder than even Clean Shot. I'm not going to hate on Clean Shot as it is really clean, meters really well and if it was the only powder I used it would be fine. Nevertheless I'm going to stick with True Blue and Winchester 231 and probably still try out WSF and Sport Pistol once I can find some.
Not at all what I expected. I really thought any of the fast powders would be similar in terms of recoil profile.