Originally Posted by KalashnikovJosh
9mm or .40?
Get FOUR of each.
Fixed that for you. Come on. If my wife were to see that other people are okay with one of each, she'll get to thinking that I'm okay with one of each. And I'm not...
Seriously though, it all depends. Good 9mm ammo goes a long way toward narrowing the gap between it and .40. Good .40 will always be better, but 9mm isn't the "I shot a bad guy with my 9mm and all it did was piss him off" thing that you will hear some .45 ACP guys make it out to be. 9mm is SERIOUSLY cheaper to shoot if you are using bulk 'White Box" stuff, but the price difference isn't quite as pronounced when you get into better ammo. And if you can take a Yote with .22lr, 9mm will do just as well. Taking Yotes with .22lr might not be best (might not be legal depending on where you live), I'm just saying that it has plenty of power for that. I do wonder about taking a Yote with a pistol out at 50yds or so. You must be a bit better than I am!
In the end, Josh has it right. Buy one of each. In the beginning I swore I would use .380 for my pocket CC pistol and 9mm for everything else (to save money). Yeah... A couple each of 9mm, .40 S&W, .45 ACP, 10mm, Tokarev, and .22mag later...