As I said, for me all the talk about the amo is purely academic, because my major point is finding gun that meets my requirements. Once I found this, I can go out and scout for the best amo for the gun.
Once i am done with the unbelievable work to change my name and gender at all possible locations, I will visit a few gun stores and see what I can find that feels good.
I have the feeling I will end up with a revolver, because they seem to come in the smallest versions that can still be handled OK.
I never was really concerned about my personal safety when I was an almost 6'1" tall guy. I traveled around in my motorhome and parked overnight on Walmart lots or truck stops without any fear.
But now being a trans woman, I am definitely way more concerned. But I still want to travel around in my rig. For most cases my first line of defense is still my 120 lbs big Rottweiler mix dog, but the pooch is not always with me, and a little gun might become handy.
But it is only good, if it is light weight enough so I carry it with me all the time.