My contribution on ammo is....
Practice with what you will be using. This doesn't mean that you need to use expensive personal protection rounds all the time, but you DO need to shoot what you will be using for carry.
I reload my own ammo for the majority of range use, but I would NEVER put reloads into any magazine that might be used to defend myself or my family! Use purchased ammunition only. Buy some of the recommended ammunition and practice with it frequently.
“Socialism is a philosophy of failure, the creed of ignorance, and the gospel of envy, its inherent virtue is the equal sharing of misery.” (Winston Churchill)