You were right about the load. Empties eject right at my feet, when they eject.
12 rounds fired into three inches at thirty feet. That is all I can do with any handgun without a rest. Three failure to feed, two failure to eject.
It needs more zip, or a lighter recoil spring. It is so comfortable to shoot, I will add zip. Make it an actual Super instead of a light 9.
Hogdgons Annual says 5.5 gr is a max load with a 115.
Sierra says 5.9 is minimum with Universal, with 6.7 as max with jacketed bullets.
I will try another dozen at 5.5, and then see how she runs with 6 gr.