ANY bullet will work if..........................

1. it has enough fps/energy
2. expands...... (optional )
3. hits an organ to cause enough blood loss
4. does enough damage to prevent movement
5. lastly......... is just visible !! (revolvers)

I have shot9mm 110 to 147gr bullets and it just comes down to what YOU feel comfortable with.
Nothing worse than having a load in your weapon that you do not have trust in.
To some a +P+ load is what works for them, while there are others that are happy with just a standard 9mm loading.
If you can only hit a target with just one out of twelve shots.......
you need to fine tune every thing a little more...............