Too much to think about. BEEN THERE! Trust ME. Pick some ammo & use it.
I have a nice picture of me in the back of a police car. I am being basically released to go obtain emergency medical care. I fired 3 shots. I had 11 rounds left. 1970s Browning Hi Power MKiii, loaded with Golden Saber 124 Grain +P, no one died, and I put an abrupt stop to a raving meth addict's rampage with a Chevy S10 4x4 pickup truck. He was arrested for the same thing 5 years later. The police found a stairwell in the parking garage with no security cameras, and gave him free lessons in falling down stairs, and an advanced class in falling up stairs. Then they put the boots to him. I lived it, and can say this: "I don't have time to think about what ammo is loaded in which magazine." I have things like, "Am I going to die tonight." "How badly am I hurt, and what do I do next?" "I don't have a clean shot, unless I move to another location, and what is a good location?" "Don't shoot the tread of the tires, get the sidewalls." "Is this a-hole's family going to sue me, for killing him." "When will one of those drunks down range realize he need to get behind cover or move?" "Will I go to jail" (That one was a fleeting thought. There was no way in hell any AG was going to prosecute that case). "Do I want a crazy person in control of 6000 pounds of metal on wheels, or a dead guy?" I am not breaching a door while some dope dealer sleeps off a 3 day meth run . I am trying really hard not to die, and not to kill anyone in the process of not dying. It will cost you about $50 but case number: 2003-32070832 from the Phoenix Arizona Police Department. (Note: They will not collate anything, and it's long report from 5 or 6 officers, including a detective) If I never have to do it again, it will still be way too soon. I bought another Hi Power, but I usually carry a German Sig Sauer P228R now. LEO HST or LEO Golden Sabers, usually 124 grain. .40 S&W is Winchester Defender 180 Grain, or LEO HST. I stayed with 9mm during the .40 craze. Now that people are dumping the .40.......... Why not? It's an excellent compromise round. OH, AND UNLESS I AM ON A ROAD TRIP, I ONLY HAVE ONE MAGAZINE WITH ME, AND SOMETIMES A SMALL BACKUP GUN. IF I JUST HAVE THE BACKUP GUN, I HAVE 2 MAGS, (7+6). IF 13 OR 16 ROUNDS WON'T DO IT, I REALLY NEED AN AR 15, A MINI 14, OR AN AK 47. 46 ROUNDS? I DON'T LIVE IN 1980s EL SALVADOR! (YET) A little German solo shoulder holster and the P228, with 16 rounds, and or (usually or) a baby Glock 43 in a belly band, with 1 spare 6 round magazine. I probably won't ever need more than 6 rounds. 0 rounds sounds much nicer.