+1 on NGIB. My Sig Pro-9 eats anything, but every gun is different. I use Remington Golden Sabre 124gr +P as my defenseive round, but that's just my preference. The shape of that bullet is very similar to hard ball and functions flawlessly for me. I try to practice with 124 gr FMJs, but honestly I can't tell much difference between them and 115s in practice, so use whatever is available and most affordable. Good luck!