You know, I hear that phrase a lot. It comes across like there is a body count out there. Maybe the phrase ' What I Carry For Self Defense, But Hope to Never Need It' might sound a bit better. This excludes of course foe like mad dogs, zombies, rabid wild animals and other treachorous critters. But 'What I Use' for self defense makes it sound like you have been in to many bad places, I hope not. I carry myself, a Colt DS w/38 +P that are over 10 years old ( I know there old, but I also shoot 45 year old M2 ammo in my Garand and have never had a missfire) and hope I never have to 'USE' them either.
Just some to think about when you talk defense ammo.