As finicky as this pistol has been made out to be, I was curious as to which self defense ammunition is working well in your Nanos? I have not experienced any issues with different weights of bullets yet. I use American Eagle and Speer Lawman FMJs to practice and I have been using Hornady TAP FPD 147 gr 9mm standard pressure for self defense. The little bugger seems to like it and its a good round so I stick with it. I have no feeding issues do to the truncated cone design and haven't had any ejection issues either. Until I do, I think I will stick with these.
What does your Nano like? What does it not like?