I say 40SW or 45ACP
I was thinking about this while at the range. You see a ton of diff't calibers out here: 9mm, 40 s&w, 357 sig, 9 X18, 38 special, 44 special, 357 mag, 44 mag, 38 super. Depending on gun & shooting each one will perform pretty well, but which one is considered the most accurate, best performing and most effective as a defensive round?
I'm not looking to start a caliber war, I've just been toying w/ the idea of building a target gun and was wondering what caliber to base this project on.